312672862981 has 2 divisors, whose sum is σ = 312672862982. Its totient is φ = 312672862980.

The previous prime is 312672862913. The next prime is 312672863017. The reversal of 312672862981 is 189268276213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289261108900 + 23411754081 = 537830^2 + 153009^2 .

It is a cyclic number.

It is not a de Polignac number, because 312672862981 - 2¹⁵ = 312672830213 is a prime.

It is a super-2 number, since 2×312672862981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312672862081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156336431490 + 156336431491.

It is an arithmetic number, because the mean of its divisors is an integer number (156336431491).

Almost surely, 2^312672862981 is an apocalyptic number.

It is an amenable number.

312672862981 is a deficient number, since it is larger than the sum of its proper divisors (1).

312672862981 is an equidigital number, since it uses as much as digits as its factorization.

312672862981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 55.

The spelling of 312672862981 in words is "three hundred twelve billion, six hundred seventy-two million, eight hundred sixty-two thousand, nine hundred eighty-one".