312230131 has 2 divisors, whose sum is σ = 312230132. Its totient is φ = 312230130.

The previous prime is 312230119. The next prime is 312230137. The reversal of 312230131 is 131032213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312230131 - 2⁷ = 312230003 is a prime.

It is a super-2 number, since 2×312230131² = 194975309408554322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (312230137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156115065 + 156115066.

It is an arithmetic number, because the mean of its divisors is an integer number (156115066).

Almost surely, 2^312230131 is an apocalyptic number.

312230131 is a deficient number, since it is larger than the sum of its proper divisors (1).

312230131 is an equidigital number, since it uses as much as digits as its factorization.

312230131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 312230131 is about 17670.0348330160. The cubic root of 312230131 is about 678.4090046454.

Adding to 312230131 its reverse (131032213), we get a palindrome (443262344).

The spelling of 312230131 in words is "three hundred twelve million, two hundred thirty thousand, one hundred thirty-one".