38413831 has 2 divisors, whose sum is σ = 38413832. Its totient is φ = 38413830.

The previous prime is 38413819. The next prime is 38413849. The reversal of 38413831 is 13831483.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38413831 - 2¹¹ = 38411783 is a prime.

It is a super-2 number, since 2×38413831² = 2951244824193122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38413793 and 38413802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38413861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19206915 + 19206916.

It is an arithmetic number, because the mean of its divisors is an integer number (19206916).

Almost surely, 2^38413831 is an apocalyptic number.

38413831 is a deficient number, since it is larger than the sum of its proper divisors (1).

38413831 is an equidigital number, since it uses as much as digits as its factorization.

38413831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 38413831 is about 6197.8892374743. The cubic root of 38413831 is about 337.4135665266.

The spelling of 38413831 in words is "thirty-eight million, four hundred thirteen thousand, eight hundred thirty-one".