Search a number
-
+
131127372831 = 3713480320047
BaseRepresentation
bin111101000011111001…
…1001110110000011111
3110112110111021201102010
41322013303032300133
54122022101412311
6140123350402303
712321313164420
oct1720763166037
9415414251363
10131127372831
1150679a90014
12214b6360393
13c49961a750
1464bd0d1647
153626d04da6
hex1e87ccec1f

131127372831 has 16 divisors (see below), whose sum is σ = 215183381504. Its totient is φ = 69166086624.

The previous prime is 131127372811. The next prime is 131127372899. The reversal of 131127372831 is 138273721131.

It is not a de Polignac number, because 131127372831 - 29 = 131127372319 is a prime.

It is a super-2 number, since 2×1311273728312 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 131127372831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131127372811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240159751 + ... + 240160296.

It is an arithmetic number, because the mean of its divisors is an integer number (13448961344).

Almost surely, 2131127372831 is an apocalyptic number.

131127372831 is a deficient number, since it is larger than the sum of its proper divisors (84056008673).

131127372831 is a wasteful number, since it uses less digits than its factorization.

131127372831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480320070.

The product of its digits is 42336, while the sum is 39.

The spelling of 131127372831 in words is "one hundred thirty-one billion, one hundred twenty-seven million, three hundred seventy-two thousand, eight hundred thirty-one".

Divisors: 1 3 7 13 21 39 91 273 480320047 1440960141 3362240329 6244160611 10086720987 18732481833 43709124277 131127372831