312231211012012 has 24 divisors (see below), whose sum is σ = 578610833625216. Its totient is φ = 146915886044928.

The previous prime is 312231211012001. The next prime is 312231211012027. The reversal of 312231211012012 is 210210112132213.

It is a happy number.

It is a super-2 number, since 2×312231211012012² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256396668 + ... + 257611555.

It is an arithmetic number, because the mean of its divisors is an integer number (24108784734384).

Almost surely, 2^{312231211012012} is an apocalyptic number.

It is an amenable number.

312231211012012 is a deficient number, since it is larger than the sum of its proper divisors (266379622613204).

312231211012012 is a wasteful number, since it uses less digits than its factorization.

312231211012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514017177 (or 514017175 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 312231211012012 its reverse (210210112132213), we get a palindrome (522441323144225).

The spelling of 312231211012012 in words is "three hundred twelve trillion, two hundred thirty-one billion, two hundred eleven million, twelve thousand, twelve".