22535131 has 2 divisors, whose sum is σ = 22535132. Its totient is φ = 22535130.

The previous prime is 22535129. The next prime is 22535141. The reversal of 22535131 is 13153522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22535131 - 2¹ = 22535129 is a prime.

It is a super-2 number, since 2×22535131² = 1015664258374322, which contains 22 as substring.

Together with 22535129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22535111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11267565 + 11267566.

It is an arithmetic number, because the mean of its divisors is an integer number (11267566).

Almost surely, 2^22535131 is an apocalyptic number.

22535131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22535131 is an equidigital number, since it uses as much as digits as its factorization.

22535131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900, while the sum is 22.

The square root of 22535131 is about 4747.1181784320. The cubic root of 22535131 is about 282.4576635332.

Adding to 22535131 its reverse (13153522), we get a palindrome (35688653).

The spelling of 22535131 in words is "twenty-two million, five hundred thirty-five thousand, one hundred thirty-one".