23870381 has 2 divisors, whose sum is σ = 23870382. Its totient is φ = 23870380.

The previous prime is 23870377. The next prime is 23870383. The reversal of 23870381 is 18307832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22714756 + 1155625 = 4766^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 23870381 - 2² = 23870377 is a prime.

It is a super-2 number, since 2×23870381² = 1139590178170322, which contains 22 as substring.

Together with 23870383, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23870383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11935190 + 11935191.

It is an arithmetic number, because the mean of its divisors is an integer number (11935191).

Almost surely, 2^23870381 is an apocalyptic number.

It is an amenable number.

23870381 is a deficient number, since it is larger than the sum of its proper divisors (1).

23870381 is an equidigital number, since it uses as much as digits as its factorization.

23870381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 23870381 is about 4885.7323913616. The cubic root of 23870381 is about 287.9296904306.

The spelling of 23870381 in words is "twenty-three million, eight hundred seventy thousand, three hundred eighty-one".