402246631 has 2 divisors, whose sum is σ = 402246632. Its totient is φ = 402246630.

The previous prime is 402246623. The next prime is 402246653. The reversal of 402246631 is 136642204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402246631 - 2³ = 402246623 is a prime.

It is a super-2 number, since 2×402246631² = 323604704301700322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402246631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402246671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201123315 + 201123316.

It is an arithmetic number, because the mean of its divisors is an integer number (201123316).

Almost surely, 2^402246631 is an apocalyptic number.

402246631 is a deficient number, since it is larger than the sum of its proper divisors (1).

402246631 is an equidigital number, since it uses as much as digits as its factorization.

402246631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 402246631 is about 20056.0871308438. The cubic root of 402246631 is about 738.1831684016.

Adding to 402246631 its reverse (136642204), we get a palindrome (538888835).

It can be divided in two parts, 4022 and 46631, that added together give a cube (50653 = 37³).

The spelling of 402246631 in words is "four hundred two million, two hundred forty-six thousand, six hundred thirty-one".