31761619012 has 12 divisors (see below), whose sum is σ = 55603537920. Its totient is φ = 15874893896.

The previous prime is 31761618899. The next prime is 31761619049. The reversal of 31761619012 is 21091616713.

It is a happy number.

It is a super-2 number, since 2×31761619012² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1466812 + ... + 1488307.

It is an arithmetic number, because the mean of its divisors is an integer number (4633628160).

Almost surely, 2^31761619012 is an apocalyptic number.

It is an amenable number.

31761619012 is a deficient number, since it is larger than the sum of its proper divisors (23841918908).

31761619012 is a wasteful number, since it uses less digits than its factorization.

31761619012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957810 (or 2957808 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 31761619012 in words is "thirty-one billion, seven hundred sixty-one million, six hundred nineteen thousand, twelve".