31321223002012 has 48 divisors (see below), whose sum is σ = 55421275738752. Its totient is φ = 15487827912000.

The previous prime is 31321223001997. The next prime is 31321223002019. The reversal of 31321223002012 is 21020032212313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321223002019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84825463 + ... + 85193905.

It is an arithmetic number, because the mean of its divisors is an integer number (1154609911224).

Almost surely, 2^{31321223002012} is an apocalyptic number.

It is an amenable number.

31321223002012 is a deficient number, since it is larger than the sum of its proper divisors (24100052736740).

31321223002012 is a wasteful number, since it uses less digits than its factorization.

31321223002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369298 (or 369296 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31321223002012 its reverse (21020032212313), we get a palindrome (52341255214325).

The spelling of 31321223002012 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twenty-three million, two thousand, twelve".