31195304012 has 6 divisors (see below), whose sum is σ = 54591782028. Its totient is φ = 15597652004.

The previous prime is 31195304003. The next prime is 31195304017. The reversal of 31195304012 is 21040359113.

It is a super-2 number, since 2×31195304012² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31195304017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3899412998 + ... + 3899413005.

It is an arithmetic number, because the mean of its divisors is an integer number (9098630338).

Almost surely, 2^31195304012 is an apocalyptic number.

It is an amenable number.

31195304012 is a deficient number, since it is larger than the sum of its proper divisors (23396478016).

31195304012 is a wasteful number, since it uses less digits than its factorization.

31195304012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7798826007 (or 7798826005 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The spelling of 31195304012 in words is "thirty-one billion, one hundred ninety-five million, three hundred four thousand, twelve".