31311332010100 has 36 divisors (see below), whose sum is σ = 67950163302700. Its totient is φ = 12523689884160.

The previous prime is 31311332010071. The next prime is 31311332010137. The reversal of 31311332010100 is 101023311313.

It can be written as a sum of positive squares in 6 ways, for example, as 7357081211236 + 23954250798864 = 2712394^2 + 4894308^2 .

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 in 11 ways as a sum of consecutive naturals, for example, 9042165 + ... + 12015964.

Almost surely, 2^{31311332010100} is an apocalyptic number.

It is an amenable number.

31311332010100 is an abundant number, since it is smaller than the sum of its proper divisors (36638831292600).

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

31311332010100 is a wasteful number, since it uses less digits than its factorization.

31311332010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21073012 (or 21073005 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31311332010100 its reverse (101023311313), we get a palindrome (31412355321413).

The spelling of 31311332010100 in words is "thirty-one trillion, three hundred eleven billion, three hundred thirty-two million, ten thousand, one hundred".