Search a number
-
+
31230023123025 = 355245007114221
BaseRepresentation
bin1110001100111010011100…
…11011110100000001010001
311002120120011000012112200000
413012131032123310001101
513043133041404414100
6150230512523320213
76402203041415166
oct706351633640121
9132516130175600
1031230023123025
119a5063a984911
123604707680069
131456c94b26abc
1479d78101c06d
15392570659900
hex1c674e6f4051

31230023123025 has 72 divisors (see below), whose sum is σ = 58009958208384. Its totient is φ = 16655496436800.

The previous prime is 31230023122997. The next prime is 31230023123063. The reversal of 31230023123025 is 52032132003213.

It is a happy number.

31230023123025 is a `hidden beast` number, since 3 + 12 + 30 + 0 + 2 + 312 + 302 + 5 = 666.

It is not a de Polignac number, because 31230023123025 - 214 = 31230023106641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31230023123025.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 273360415 + ... + 273474635.

Almost surely, 231230023123025 is an apocalyptic number.

It is an amenable number.

31230023123025 is a deficient number, since it is larger than the sum of its proper divisors (26779935085359).

31230023123025 is a wasteful number, since it uses less digits than its factorization.

31230023123025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159253 (or 159236 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 31230023123025 its reverse (52032132003213), we get a palindrome (83262155126238).

The spelling of 31230023123025 in words is "thirty-one trillion, two hundred thirty billion, twenty-three million, one hundred twenty-three thousand, twenty-five".

Divisors: 1 3 5 9 15 25 27 45 75 81 135 225 243 405 675 1215 2025 6075 45007 114221 135021 225035 342663 405063 571105 675105 1027989 1125175 1215189 1713315 2025315 2855525 3083967 3375525 3645567 5139945 6075945 8566575 9251901 10126575 10936701 15419835 18227835 25699725 27755703 30379725 46259505 54683505 77099175 91139175 138778515 231297525 273417525 693892575 5140744547 15422233641 25703722735 46266700923 77111168205 128518613675 138800102769 231333504615 385555841025 416400308307 694000513845 1156667523075 1249200924921 2082001541535 3470002569225 6246004624605 10410007707675 31230023123025