Search a number
-
+
31929374682 = 2321773854149
BaseRepresentation
bin11101101111001000…
…111001011111011010
310001102012202021212200
4131233020321133122
51010342404442212
622400153151030
72210145130632
oct355710713732
9101365667780
1031929374682
11125a5332867
1262310bb476
13301b01211a
14178c79b6c2
15c6d1da6dc
hex76f2397da

31929374682 has 12 divisors (see below), whose sum is σ = 69180311850. Its totient is φ = 10643124888.

The previous prime is 31929374669. The next prime is 31929374689. The reversal of 31929374682 is 28647392913.

31929374682 is a `hidden beast` number, since 3 + 1 + 92 + 93 + 7 + 468 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20807774001 + 11121600681 = 144249^2 + 105459^2 .

It is a super-2 number, since 2×319293746822 (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (31929374689) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 886927057 + ... + 886927092.

Almost surely, 231929374682 is an apocalyptic number.

31929374682 is an abundant number, since it is smaller than the sum of its proper divisors (37250937168).

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

31929374682 is a wasteful number, since it uses less digits than its factorization.

31929374682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773854157 (or 1773854154 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 31929374682 in words is "thirty-one billion, nine hundred twenty-nine million, three hundred seventy-four thousand, six hundred eighty-two".

Divisors: 1 2 3 6 9 18 1773854149 3547708298 5321562447 10643124894 15964687341 31929374682