31200013032101 has 4 divisors (see below), whose sum is σ = 31200088651104. Its totient is φ = 31199937413100.

The previous prime is 31200013032079. The next prime is 31200013032151. The reversal of 31200013032101 is 10123031000213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31200013032101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31200013032101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31200013032151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37187195 + ... + 38016936.

It is an arithmetic number, because the mean of its divisors is an integer number (7800022162776).

Almost surely, 2^{31200013032101} is an apocalyptic number.

It is an amenable number.

31200013032101 is a deficient number, since it is larger than the sum of its proper divisors (75619003).

31200013032101 is an equidigital number, since it uses as much as digits as its factorization.

31200013032101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75619002.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31200013032101 its reverse (10123031000213), we get a palindrome (41323044032314).

The spelling of 31200013032101 in words is "thirty-one trillion, two hundred billion, thirteen million, thirty-two thousand, one hundred one".