23081657 has 2 divisors, whose sum is σ = 23081658. Its totient is φ = 23081656.

The previous prime is 23081633. The next prime is 23081677. The reversal of 23081657 is 75618032.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18800896 + 4280761 = 4336^2 + 2069^2 .

It is a cyclic number.

It is not a de Polignac number, because 23081657 - 2¹⁰ = 23080633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23081677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11540828 + 11540829.

It is an arithmetic number, because the mean of its divisors is an integer number (11540829).

Almost surely, 2^23081657 is an apocalyptic number.

It is an amenable number.

23081657 is a deficient number, since it is larger than the sum of its proper divisors (1).

23081657 is an equidigital number, since it uses as much as digits as its factorization.

23081657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 23081657 is about 4804.3373112220. The cubic root of 23081657 is about 284.7228535903.

Adding to 23081657 its reverse (75618032), we get a palindrome (98699689).

Subtracting 23081657 from its reverse (75618032), we obtain a triangular number (52536375 = T₁₀₂₅₀).

The spelling of 23081657 in words is "twenty-three million, eighty-one thousand, six hundred fifty-seven".