312220332031 has 2 divisors, whose sum is σ = 312220332032. Its totient is φ = 312220332030.

The previous prime is 312220331971. The next prime is 312220332049. The reversal of 312220332031 is 130233022213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312220332031 - 2⁷ = 312220331903 is a prime.

It is a super-2 number, since 2×312220332031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312220331993 and 312220332011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312220332071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156110166015 + 156110166016.

It is an arithmetic number, because the mean of its divisors is an integer number (156110166016).

Almost surely, 2^312220332031 is an apocalyptic number.

312220332031 is a deficient number, since it is larger than the sum of its proper divisors (1).

312220332031 is an equidigital number, since it uses as much as digits as its factorization.

312220332031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 312220332031 its reverse (130233022213), we get a palindrome (442453354244).

The spelling of 312220332031 in words is "three hundred twelve billion, two hundred twenty million, three hundred thirty-two thousand, thirty-one".