312011009971 has 2 divisors, whose sum is σ = 312011009972. Its totient is φ = 312011009970.

The previous prime is 312011009939. The next prime is 312011010011. The reversal of 312011009971 is 179900110213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312011009971 - 2⁵ = 312011009939 is a prime.

It is a super-2 number, since 2×312011009971² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (312011009071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156005504985 + 156005504986.

It is an arithmetic number, because the mean of its divisors is an integer number (156005504986).

Almost surely, 2^312011009971 is an apocalyptic number.

312011009971 is a deficient number, since it is larger than the sum of its proper divisors (1).

312011009971 is an equidigital number, since it uses as much as digits as its factorization.

312011009971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 34.

The spelling of 312011009971 in words is "three hundred twelve billion, eleven million, nine thousand, nine hundred seventy-one".