38316431 has 2 divisors, whose sum is σ = 38316432. Its totient is φ = 38316430.

The previous prime is 38316409. The next prime is 38316457. The reversal of 38316431 is 13461383.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38316431 - 2¹⁸ = 38054287 is a prime.

It is a super-2 number, since 2×38316431² = 2936297769155522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 38316394 and 38316403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38316461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19158215 + 19158216.

It is an arithmetic number, because the mean of its divisors is an integer number (19158216).

Almost surely, 2^38316431 is an apocalyptic number.

38316431 is a deficient number, since it is larger than the sum of its proper divisors (1).

38316431 is an equidigital number, since it uses as much as digits as its factorization.

38316431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 38316431 is about 6190.0267366143. The cubic root of 38316431 is about 337.1281493922.

The spelling of 38316431 in words is "thirty-eight million, three hundred sixteen thousand, four hundred thirty-one".