312443631 has 6 divisors (see below), whose sum is σ = 451307480. Its totient is φ = 208295748.

The previous prime is 312443627. The next prime is 312443641. The reversal of 312443631 is 136344213.

312443631 is a `hidden beast` number, since 3 + 1 + 24 + 4 + 3 + 631 = 666.

It is not a de Polignac number, because 312443631 - 2² = 312443627 is a prime.

It is a super-2 number, since 2×312443631² = 195242045104928322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312443595 and 312443604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312443611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17357971 + ... + 17357988.

Almost surely, 2^312443631 is an apocalyptic number.

312443631 is a deficient number, since it is larger than the sum of its proper divisors (138863849).

312443631 is a wasteful number, since it uses less digits than its factorization.

312443631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34715965 (or 34715962 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 312443631 is about 17676.0751016734. The cubic root of 312443631 is about 678.5635992934.

Adding to 312443631 its reverse (136344213), we get a palindrome (448787844).

The spelling of 312443631 in words is "three hundred twelve million, four hundred forty-three thousand, six hundred thirty-one".