312276631 has 2 divisors, whose sum is σ = 312276632. Its totient is φ = 312276630.

The previous prime is 312276599. The next prime is 312276637. The reversal of 312276631 is 136672213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312276631 - 2⁵ = 312276599 is a prime.

It is a super-2 number, since 2×312276631² = 195033388537420322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312276593 and 312276602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312276637) 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, 156138315 + 156138316.

It is an arithmetic number, because the mean of its divisors is an integer number (156138316).

Almost surely, 2^312276631 is an apocalyptic number.

312276631 is a deficient number, since it is larger than the sum of its proper divisors (1).

312276631 is an equidigital number, since it uses as much as digits as its factorization.

312276631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 312276631 is about 17671.3505709100. The cubic root of 312276631 is about 678.4426811441.

The spelling of 312276631 in words is "three hundred twelve million, two hundred seventy-six thousand, six hundred thirty-one".