10931231912 has 16 divisors (see below), whose sum is σ = 20497240500. Its totient is φ = 5465301120.

The previous prime is 10931231911. The next prime is 10931231963. The reversal of 10931231912 is 21913213901.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10250752516 + 680479396 = 101246^2 + 26086^2 .

It is a super-2 number, since 2×10931231912² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10931231911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180362 + ... + 233222.

Almost surely, 2^10931231912 is an apocalyptic number.

It is an amenable number.

10931231912 is a deficient number, since it is larger than the sum of its proper divisors (9566008588).

10931231912 is a wasteful number, since it uses less digits than its factorization.

10931231912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78716 (or 78712 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 10931231912 in words is "ten billion, nine hundred thirty-one million, two hundred thirty-one thousand, nine hundred twelve".