3131110030021 has 4 divisors (see below), whose sum is σ = 3153636001600. Its totient is φ = 3108584058444.

The previous prime is 3131110029989. The next prime is 3131110030057. The reversal of 3131110030021 is 1200300111313.

3131110030021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 3131110030021 - 2⁵ = 3131110029989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3131110029977 and 3131110030004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131110030621) 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, 11262985581 + ... + 11262985858.

It is an arithmetic number, because the mean of its divisors is an integer number (788409000400).

Almost surely, 2^{3131110030021} is an apocalyptic number.

It is an amenable number.

3131110030021 is a deficient number, since it is larger than the sum of its proper divisors (22525971579).

3131110030021 is a wasteful number, since it uses less digits than its factorization.

3131110030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22525971578.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 3131110030021 its reverse (1200300111313), we get a palindrome (4331410141334).

The spelling of 3131110030021 in words is "three trillion, one hundred thirty-one billion, one hundred ten million, thirty thousand, twenty-one".