31322213121104 has 10 divisors (see below), whose sum is σ = 60686787922170. Its totient is φ = 15661106560544.

The previous prime is 31322213121097. The next prime is 31322213121211. The reversal of 31322213121104 is 40112131222313.

It can be written as a sum of positive squares in only one way, i.e., 16462884272704 + 14859328848400 = 4057448^2 + 3854780^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978819160019 + ... + 978819160050.

It is an arithmetic number, because the mean of its divisors is an integer number (6068678792217).

Almost surely, 2^{31322213121104} is an apocalyptic number.

It is an amenable number.

31322213121104 is a deficient number, since it is larger than the sum of its proper divisors (29364574801066).

31322213121104 is a wasteful number, since it uses less digits than its factorization.

31322213121104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957638320077 (or 1957638320071 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 31322213121104 its reverse (40112131222313), we get a palindrome (71434344343417).

The spelling of 31322213121104 in words is "thirty-one trillion, three hundred twenty-two billion, two hundred thirteen million, one hundred twenty-one thousand, one hundred four".