Search a number
-
+
31010112210 = 23571113424291
BaseRepresentation
bin11100111000010110…
…001100001011010010
32222001010222220211110
4130320112030023102
51002002042042320
622125034154150
72145313414260
oct347026141322
988033886743
1031010112210
1112173444310
126015282956
132c02732c2c
141702669430
15c176565e0
hex73858c2d2

31010112210 has 64 divisors (see below), whose sum is σ = 92788706304. Its totient is φ = 6443659200.

The previous prime is 31010112209. The next prime is 31010112223. The reversal of 31010112210 is 1221101013.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6709836 + ... + 6714455.

It is an arithmetic number, because the mean of its divisors is an integer number (1449823536).

Almost surely, 231010112210 is an apocalyptic number.

31010112210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31010112210 is an abundant number, since it is smaller than the sum of its proper divisors (61778594094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31010112210 is a wasteful number, since it uses less digits than its factorization.

31010112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13424319.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 31010112210 its reverse (1221101013), we get a palindrome (32231213223).

The spelling of 31010112210 in words is "thirty-one billion, ten million, one hundred twelve thousand, two hundred ten".

Divisors: 1 2 3 5 6 7 10 11 14 15 21 22 30 33 35 42 55 66 70 77 105 110 154 165 210 231 330 385 462 770 1155 2310 13424291 26848582 40272873 67121455 80545746 93970037 134242910 147667201 187940074 201364365 281910111 295334402 402728730 443001603 469850185 563820222 738336005 886003206 939700370 1033670407 1409550555 1476672010 2067340814 2215008015 2819101110 3101011221 4430016030 5168352035 6202022442 10336704070 15505056105 31010112210