31992973011 has 12 divisors (see below), whose sum is σ = 46213880440. Its totient is φ = 21327814080.

The previous prime is 31992973007. The next prime is 31992973027. The reversal of 31992973011 is 11037929913.

31992973011 is a `hidden beast` number, since 319 + 9 + 29 + 7 + 301 + 1 = 666.

It is not a de Polignac number, because 31992973011 - 2² = 31992973007 is a prime.

It is a super-2 number, since 2×31992973011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31992974011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250971 + ... + 356331.

Almost surely, 2^31992973011 is an apocalyptic number.

31992973011 is a deficient number, since it is larger than the sum of its proper divisors (14220907429).

31992973011 is a wasteful number, since it uses less digits than its factorization.

31992973011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139106 (or 139103 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 45.

The spelling of 31992973011 in words is "thirty-one billion, nine hundred ninety-two million, nine hundred seventy-three thousand, eleven".