312270631 has 2 divisors, whose sum is σ = 312270632. Its totient is φ = 312270630.

The previous prime is 312270617. The next prime is 312270649. The reversal of 312270631 is 136072213.

It is a weak prime.

It is an emirp because it is prime and its reverse (136072213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312270631 - 2¹³ = 312262439 is a prime.

It is a super-2 number, since 2×312270631² = 195025893970276322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312270596 and 312270605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312270661) 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 as a sum of consecutive naturals, namely, 156135315 + 156135316.

It is an arithmetic number, because the mean of its divisors is an integer number (156135316).

Almost surely, 2^312270631 is an apocalyptic number.

312270631 is a deficient number, since it is larger than the sum of its proper divisors (1).

312270631 is an equidigital number, since it uses as much as digits as its factorization.

312270631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 312270631 is about 17671.1808037833. The cubic root of 312270631 is about 678.4383359773.

The spelling of 312270631 in words is "three hundred twelve million, two hundred seventy thousand, six hundred thirty-one".