23377021 has 2 divisors, whose sum is σ = 23377022. Its totient is φ = 23377020.

The previous prime is 23377019. The next prime is 23377027. The reversal of 23377021 is 12077332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21288996 + 2088025 = 4614^2 + 1445^2 .

It is a cyclic number.

It is not a de Polignac number, because 23377021 - 2¹ = 23377019 is a prime.

It is a super-2 number, since 2×23377021² = 1092970221668882, which contains 22 as substring.

Together with 23377019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23377027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11688510 + 11688511.

It is an arithmetic number, because the mean of its divisors is an integer number (11688511).

Almost surely, 2^23377021 is an apocalyptic number.

It is an amenable number.

23377021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23377021 is an equidigital number, since it uses as much as digits as its factorization.

23377021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 23377021 is about 4834.9789037802. The cubic root of 23377021 is about 285.9321933242.

The spelling of 23377021 in words is "twenty-three million, three hundred seventy-seven thousand, twenty-one".