38930831 has 2 divisors, whose sum is σ = 38930832. Its totient is φ = 38930830.

The previous prime is 38930821. The next prime is 38930839. The reversal of 38930831 is 13803983.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38930831 is a prime.

It is a super-2 number, since 2×38930831² = 3031219204701122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 38930791 and 38930800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38930839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19465415 + 19465416.

It is an arithmetic number, because the mean of its divisors is an integer number (19465416).

Almost surely, 2^38930831 is an apocalyptic number.

38930831 is a deficient number, since it is larger than the sum of its proper divisors (1).

38930831 is an equidigital number, since it uses as much as digits as its factorization.

38930831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 38930831 is about 6239.4575886050. The cubic root of 38930831 is about 338.9205412979.

The spelling of 38930831 in words is "thirty-eight million, nine hundred thirty thousand, eight hundred thirty-one".