396307231 has 2 divisors, whose sum is σ = 396307232. Its totient is φ = 396307230.

The previous prime is 396307217. The next prime is 396307313. The reversal of 396307231 is 132703693.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 396307231 - 2⁹ = 396306719 is a prime.

It is a super-2 number, since 2×396307231² = 314118842685774722, which contains 22 as substring.

It is equal to p_21149656 and since 396307231 and 21149656 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396307031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198153615 + 198153616.

It is an arithmetic number, because the mean of its divisors is an integer number (198153616).

Almost surely, 2^396307231 is an apocalyptic number.

396307231 is a deficient number, since it is larger than the sum of its proper divisors (1).

396307231 is an equidigital number, since it uses as much as digits as its factorization.

396307231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 34.

The square root of 396307231 is about 19907.4667147782. The cubic root of 396307231 is about 734.5319067439.

The spelling of 396307231 in words is "three hundred ninety-six million, three hundred seven thousand, two hundred thirty-one".