31012231504012 has 24 divisors (see below), whose sum is σ = 59274253518480. Its totient is φ = 14080020226560.

The previous prime is 31012231503973. The next prime is 31012231504021. The reversal of 31012231504012 is 21040513221013.

It is a super-2 number, since 2×31012231504012² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411177837 + ... + 411253252.

It is an arithmetic number, because the mean of its divisors is an integer number (2469760563270).

Almost surely, 2^{31012231504012} is an apocalyptic number.

It is an amenable number.

31012231504012 is a deficient number, since it is larger than the sum of its proper divisors (28262022014468).

31012231504012 is a wasteful number, since it uses less digits than its factorization.

31012231504012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822431961 (or 822431959 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 31012231504012 its reverse (21040513221013), we get a palindrome (52052744725025).

The spelling of 31012231504012 in words is "thirty-one trillion, twelve billion, two hundred thirty-one million, five hundred four thousand, twelve".