22113031 has 4 divisors (see below), whose sum is σ = 22530312. Its totient is φ = 21695752.

The previous prime is 22112999. The next prime is 22113043. The reversal of 22113031 is 13031122.

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

It is a cyclic number.

It is not a de Polignac number, because 22113031 - 2⁵ = 22112999 is a prime.

It is a super-2 number, since 2×22113031² = 977972280013922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22113061) 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, 208561 + ... + 208666.

It is an arithmetic number, because the mean of its divisors is an integer number (5632578).

Almost surely, 2^22113031 is an apocalyptic number.

22113031 is a deficient number, since it is larger than the sum of its proper divisors (417281).

22113031 is an equidigital number, since it uses as much as digits as its factorization.

22113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417280.

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

The square root of 22113031 is about 4702.4494680964. The cubic root of 22113031 is about 280.6829882827.

Adding to 22113031 its reverse (13031122), we get a palindrome (35144153).

The spelling of 22113031 in words is "twenty-two million, one hundred thirteen thousand, thirty-one".