31201012012 has 12 divisors (see below), whose sum is σ = 54814231080. Its totient is φ = 15539803136.

The previous prime is 31201011991. The next prime is 31201012019. The reversal of 31201012012 is 21021010213.

It is a junction number, because it is equal to n+sod(n) for n = 31201011983 and 31201012001.

It is not an unprimeable number, because it can be changed into a prime (31201012019) 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, 15174562 + ... + 15176617.

It is an arithmetic number, because the mean of its divisors is an integer number (4567852590).

Almost surely, 2^31201012012 is an apocalyptic number.

It is an amenable number.

31201012012 is a deficient number, since it is larger than the sum of its proper divisors (23613219068).

31201012012 is a wasteful number, since it uses less digits than its factorization.

31201012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30351440 (or 30351438 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 31201012012 its reverse (21021010213), we get a palindrome (52222022225).

The spelling of 31201012012 in words is "thirty-one billion, two hundred one million, twelve thousand, twelve".