31031044222100 has 72 divisors (see below), whose sum is σ = 72535300261368. Its totient is φ = 11454750720000.

The previous prime is 31031044222069. The next prime is 31031044222117. The reversal of 31031044222100 is 122244013013.

It can be written as a sum of positive squares in 12 ways, for example, as 29423920081924 + 1607124140176 = 5424382^2 + 1267724^2 .

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 23 ways as a sum of consecutive naturals, for example, 2218292 + ... + 8184308.

Almost surely, 2^{31031044222100} is an apocalyptic number.

It is an amenable number.

31031044222100 is an abundant number, since it is smaller than the sum of its proper divisors (41504256039268).

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

31031044222100 is a wasteful number, since it uses less digits than its factorization.

31031044222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5970045 (or 5970038 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31031044222100 its reverse (122244013013), we get a palindrome (31153288235113).

The spelling of 31031044222100 in words is "thirty-one trillion, thirty-one billion, forty-four million, two hundred twenty-two thousand, one hundred".