31223314122100 has 36 divisors (see below), whose sum is σ = 67755824470348. Its totient is φ = 12489098400000.

The previous prime is 31223314122089. The next prime is 31223314122131. The reversal of 31223314122100 is 122141332213.

It can be written as a sum of positive squares in 6 ways, for example, as 733016794896 + 30490297327204 = 856164^2 + 5521802^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2737240 + ... + 8362960.

Almost surely, 2^{31223314122100} is an apocalyptic number.

It is an amenable number.

31223314122100 is an abundant number, since it is smaller than the sum of its proper divisors (36532510348248).

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

31223314122100 is a wasteful number, since it uses less digits than its factorization.

31223314122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5681236 (or 5681229 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 31223314122100 its reverse (122141332213), we get a palindrome (31345455454313).

The spelling of 31223314122100 in words is "thirty-one trillion, two hundred twenty-three billion, three hundred fourteen million, one hundred twenty-two thousand, one hundred".