23089531 has 2 divisors, whose sum is σ = 23089532. Its totient is φ = 23089530.

The previous prime is 23089511. The next prime is 23089543. The reversal of 23089531 is 13598032.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23089531 - 2⁹ = 23089019 is a prime.

It is a super-2 number, since 2×23089531² = 1066252883599922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23089493 and 23089502.

It is not a weakly prime, because it can be changed into another prime (23089511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11544765 + 11544766.

It is an arithmetic number, because the mean of its divisors is an integer number (11544766).

Almost surely, 2^23089531 is an apocalyptic number.

23089531 is a deficient number, since it is larger than the sum of its proper divisors (1).

23089531 is an equidigital number, since it uses as much as digits as its factorization.

23089531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 23089531 is about 4805.1567092031. The cubic root of 23089531 is about 284.7552263798.

The spelling of 23089531 in words is "twenty-three million, eighty-nine thousand, five hundred thirty-one".