31321111001012 has 12 divisors (see below), whose sum is σ = 62642222002080. Its totient is φ = 13423333286136.

The previous prime is 31321111001003. The next prime is 31321111001069. The reversal of 31321111001012 is 21010011112313.

31321111001012 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559305553562 + ... + 559305553617.

It is an arithmetic number, because the mean of its divisors is an integer number (5220185166840).

Almost surely, 2^{31321111001012} is an apocalyptic number.

It is an amenable number.

31321111001012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31321111001012 is a wasteful number, since it uses less digits than its factorization.

31321111001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118611107190 (or 1118611107188 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 31321111001012 its reverse (21010011112313), we get a palindrome (52331122113325).

The spelling of 31321111001012 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred eleven million, one thousand, twelve".