23500381 has 2 divisors, whose sum is σ = 23500382. Its totient is φ = 23500380.

The previous prime is 23500369. The next prime is 23500391. The reversal of 23500381 is 18300532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14100025 + 9400356 = 3755^2 + 3066^2 .

It is a cyclic number.

It is not a de Polignac number, because 23500381 - 2⁹ = 23499869 is a prime.

It is a super-2 number, since 2×23500381² = 1104535814290322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23500331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11750190 + 11750191.

It is an arithmetic number, because the mean of its divisors is an integer number (11750191).

Almost surely, 2^23500381 is an apocalyptic number.

It is an amenable number.

23500381 is a deficient number, since it is larger than the sum of its proper divisors (1).

23500381 is an equidigital number, since it uses as much as digits as its factorization.

23500381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 23500381 is about 4847.7191544065. The cubic root of 23500381 is about 286.4342637463.

The spelling of 23500381 in words is "twenty-three million, five hundred thousand, three hundred eighty-one".