238023631 has 2 divisors, whose sum is σ = 238023632. Its totient is φ = 238023630.

The previous prime is 238023593. The next prime is 238023637. The reversal of 238023631 is 136320832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238023631 - 2⁹ = 238023119 is a prime.

It is a super-2 number, since 2×238023631² = 113310497828848322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 238023631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238023637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119011815 + 119011816.

It is an arithmetic number, because the mean of its divisors is an integer number (119011816).

Almost surely, 2^238023631 is an apocalyptic number.

238023631 is a deficient number, since it is larger than the sum of its proper divisors (1).

238023631 is an equidigital number, since it uses as much as digits as its factorization.

238023631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 238023631 is about 15428.0144866409. The cubic root of 238023631 is about 619.7359532934.

The spelling of 238023631 in words is "two hundred thirty-eight million, twenty-three thousand, six hundred thirty-one".