31100113213120 has 112 divisors (see below), whose sum is σ = 84638283441408. Its totient is φ = 10662701091840.

The previous prime is 31100113213069. The next prime is 31100113213123. The reversal of 31100113213120 is 2131231100113.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (31100113213123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178761375 + ... + 178935265.

Almost surely, 2^{31100113213120} is an apocalyptic number.

It is an amenable number.

31100113213120 is an abundant number, since it is smaller than the sum of its proper divisors (53538170228288).

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

31100113213120 is a wasteful number, since it uses less digits than its factorization.

31100113213120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253758 (or 253748 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 31100113213120 its reverse (2131231100113), we get a palindrome (33231344313233).

The spelling of 31100113213120 in words is "thirty-one trillion, one hundred billion, one hundred thirteen million, two hundred thirteen thousand, one hundred twenty".