38404231 has 2 divisors, whose sum is σ = 38404232. Its totient is φ = 38404230.

The previous prime is 38404211. The next prime is 38404237. The reversal of 38404231 is 13240483.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38404231 - 2¹¹ = 38402183 is a prime.

It is a super-2 number, since 2×38404231² = 2949769917402722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38404196 and 38404205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38404237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19202115 + 19202116.

It is an arithmetic number, because the mean of its divisors is an integer number (19202116).

Almost surely, 2^38404231 is an apocalyptic number.

38404231 is a deficient number, since it is larger than the sum of its proper divisors (1).

38404231 is an equidigital number, since it uses as much as digits as its factorization.

38404231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 38404231 is about 6197.1147318732. The cubic root of 38404231 is about 337.3854565115.

The spelling of 38404231 in words is "thirty-eight million, four hundred four thousand, two hundred thirty-one".