22131013 has 4 divisors (see below), whose sum is σ = 22277728. Its totient is φ = 21984300.

The previous prime is 22131001. The next prime is 22131017. The reversal of 22131013 is 31013122.

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 22131013 - 2²¹ = 20033861 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22130984 and 22131002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73131 + ... + 73432.

It is an arithmetic number, because the mean of its divisors is an integer number (5569432).

Almost surely, 2^22131013 is an apocalyptic number.

It is an amenable number.

22131013 is a deficient number, since it is larger than the sum of its proper divisors (146715).

22131013 is a wasteful number, since it uses less digits than its factorization.

22131013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146714.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 22131013 is about 4704.3610618234. The cubic root of 22131013 is about 280.7590501305.

Adding to 22131013 its reverse (31013122), we get a palindrome (53144135).

The spelling of 22131013 in words is "twenty-two million, one hundred thirty-one thousand, thirteen".