22453131 has 4 divisors (see below), whose sum is σ = 29937512. Its totient is φ = 14968752.

The previous prime is 22453127. The next prime is 22453133. The reversal of 22453131 is 13135422.

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

It is not a de Polignac number, because 22453131 - 2² = 22453127 is a prime.

It is a super-2 number, since 2×22453131² = 1008286183406322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22453098 and 22453107.

It is not an unprimeable number, because it can be changed into a prime (22453133) 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, 3742186 + ... + 3742191.

It is an arithmetic number, because the mean of its divisors is an integer number (7484378).

Almost surely, 2^22453131 is an apocalyptic number.

22453131 is a deficient number, since it is larger than the sum of its proper divisors (7484381).

22453131 is an equidigital number, since it uses as much as digits as its factorization.

22453131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7484380.

The product of its digits is 720, while the sum is 21.

The square root of 22453131 is about 4738.4734883715. The cubic root of 22453131 is about 282.1146483178.

Adding to 22453131 its reverse (13135422), we get a palindrome (35588553).

The spelling of 22453131 in words is "twenty-two million, four hundred fifty-three thousand, one hundred thirty-one".