23002531 has 2 divisors, whose sum is σ = 23002532. Its totient is φ = 23002530.

The previous prime is 23002501. The next prime is 23002543. The reversal of 23002531 is 13520032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23002531 - 2¹⁹ = 22478243 is a prime.

It is a super-2 number, since 2×23002531² = 1058232864811922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23002501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11501265 + 11501266.

It is an arithmetic number, because the mean of its divisors is an integer number (11501266).

Almost surely, 2^23002531 is an apocalyptic number.

23002531 is a deficient number, since it is larger than the sum of its proper divisors (1).

23002531 is an equidigital number, since it uses as much as digits as its factorization.

23002531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 23002531 is about 4796.0953910447. The cubic root of 23002531 is about 284.3971292363.

Adding to 23002531 its reverse (13520032), we get a palindrome (36522563).

The spelling of 23002531 in words is "twenty-three million, two thousand, five hundred thirty-one".