22013404031 has 4 divisors (see below), whose sum is σ = 22017126552. Its totient is φ = 22009681512.

The previous prime is 22013403977. The next prime is 22013404043. The reversal of 22013404031 is 13040431022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22013404031 is a prime.

It is a super-2 number, since 2×22013404031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22013403994 and 22013404012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22013404081) 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, 1852376 + ... + 1864221.

It is an arithmetic number, because the mean of its divisors is an integer number (5504281638).

Almost surely, 2^22013404031 is an apocalyptic number.

22013404031 is a deficient number, since it is larger than the sum of its proper divisors (3722521).

22013404031 is an equidigital number, since it uses as much as digits as its factorization.

22013404031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722520.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22013404031 its reverse (13040431022), we get a palindrome (35053835053).

The spelling of 22013404031 in words is "twenty-two billion, thirteen million, four hundred four thousand, thirty-one".