21130310123311 has 8 divisors (see below), whose sum is σ = 21185402106960. Its totient is φ = 21075222101568.

The previous prime is 21130310123297. The next prime is 21130310123339. The reversal of 21130310123311 is 11332101303112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21130310123311 - 2³¹ = 21128162639663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130310121311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9844440 + ... + 11797186.

It is an arithmetic number, because the mean of its divisors is an integer number (2648175263370).

Almost surely, 2^{21130310123311} is an apocalyptic number.

21130310123311 is a deficient number, since it is larger than the sum of its proper divisors (55091983649).

21130310123311 is a wasteful number, since it uses less digits than its factorization.

21130310123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980953.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 21130310123311 its reverse (11332101303112), we get a palindrome (32462411426423).

The spelling of 21130310123311 in words is "twenty-one trillion, one hundred thirty billion, three hundred ten million, one hundred twenty-three thousand, three hundred eleven".