31201100020000 has 120 divisors (see below), whose sum is σ = 77905052040816. Its totient is φ = 12294164256000.

The previous prime is 31201100019997. The next prime is 31201100020049. The reversal of 31201100020000 is 2000110213.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10302202 + ... + 12982201.

Almost surely, 2^{31201100020000} is an apocalyptic number.

It is an amenable number.

31201100020000 is an abundant number, since it is smaller than the sum of its proper divisors (46703952020816).

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

31201100020000 is an equidigital number, since it uses as much as digits as its factorization.

31201100020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23284500 (or 23284477 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 31201100020000 its reverse (2000110213), we get a palindrome (31203100130213).

The spelling of 31201100020000 in words is "thirty-one trillion, two hundred one billion, one hundred million, twenty thousand".