312112402331 has 2 divisors, whose sum is σ = 312112402332. Its totient is φ = 312112402330.

The previous prime is 312112402319. The next prime is 312112402351. The reversal of 312112402331 is 133204211213.

It is a weak prime.

It is an emirp because it is prime and its reverse (133204211213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312112402331 - 2⁶ = 312112402267 is a prime.

It is a super-2 number, since 2×312112402331² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312112402297 and 312112402306.

It is not a weakly prime, because it can be changed into another prime (312112402351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156056201165 + 156056201166.

It is an arithmetic number, because the mean of its divisors is an integer number (156056201166).

Almost surely, 2^312112402331 is an apocalyptic number.

312112402331 is a deficient number, since it is larger than the sum of its proper divisors (1).

312112402331 is an equidigital number, since it uses as much as digits as its factorization.

312112402331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 312112402331 its reverse (133204211213), we get a palindrome (445316613544).

The spelling of 312112402331 in words is "three hundred twelve billion, one hundred twelve million, four hundred two thousand, three hundred thirty-one".