382720831 has 2 divisors, whose sum is σ = 382720832. Its totient is φ = 382720830.

The previous prime is 382720799. The next prime is 382720843. The reversal of 382720831 is 138027283.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 382720831 - 2⁵ = 382720799 is a prime.

It is a super-2 number, since 2×382720831² = 292950468962661122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (382720861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191360415 + 191360416.

It is an arithmetic number, because the mean of its divisors is an integer number (191360416).

Almost surely, 2^382720831 is an apocalyptic number.

382720831 is a deficient number, since it is larger than the sum of its proper divisors (1).

382720831 is an equidigital number, since it uses as much as digits as its factorization.

382720831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 382720831 is about 19563.2520558316. The cubic root of 382720831 is about 726.0402544545.

The spelling of 382720831 in words is "three hundred eighty-two million, seven hundred twenty thousand, eight hundred thirty-one".