23045881 has 4 divisors (see below), whose sum is σ = 23361652. Its totient is φ = 22730112.

The previous prime is 23045837. The next prime is 23045899. The reversal of 23045881 is 18854032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17682025 + 5363856 = 4205^2 + 2316^2 .

It is a cyclic number.

It is not a de Polignac number, because 23045881 - 2⁷ = 23045753 is a prime.

It is a super-2 number, since 2×23045881² = 1062225262132322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23045821) 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 in 3 ways as a sum of consecutive naturals, for example, 157776 + ... + 157921.

It is an arithmetic number, because the mean of its divisors is an integer number (5840413).

Almost surely, 2^23045881 is an apocalyptic number.

It is an amenable number.

23045881 is a deficient number, since it is larger than the sum of its proper divisors (315771).

23045881 is an equidigital number, since it uses as much as digits as its factorization.

23045881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315770.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 23045881 is about 4800.6125650796. The cubic root of 23045881 is about 284.5756730513.

The spelling of 23045881 in words is "twenty-three million, forty-five thousand, eight hundred eighty-one".