312302220332231 has 2 divisors, whose sum is σ = 312302220332232. Its totient is φ = 312302220332230.

The previous prime is 312302220332159. The next prime is 312302220332561. The reversal of 312302220332231 is 132233022203213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312302220332231 is a prime.

It is a super-2 number, since 2×312302220332231² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312302220332194 and 312302220332203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312302220334231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156151110166115 + 156151110166116.

It is an arithmetic number, because the mean of its divisors is an integer number (156151110166116).

Almost surely, 2^{312302220332231} is an apocalyptic number.

312302220332231 is a deficient number, since it is larger than the sum of its proper divisors (1).

312302220332231 is an equidigital number, since it uses as much as digits as its factorization.

312302220332231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 312302220332231 its reverse (132233022203213), we get a palindrome (444535242535444).

The spelling of 312302220332231 in words is "three hundred twelve trillion, three hundred two billion, two hundred twenty million, three hundred thirty-two thousand, two hundred thirty-one".