312081163 has 2 divisors, whose sum is σ = 312081164. Its totient is φ = 312081162.

The previous prime is 312081131. The next prime is 312081173. The reversal of 312081163 is 361180213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312081163 - 2⁵ = 312081131 is a prime.

It is not a weakly prime, because it can be changed into another prime (312081103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156040581 + 156040582.

It is an arithmetic number, because the mean of its divisors is an integer number (156040582).

Almost surely, 2^312081163 is an apocalyptic number.

312081163 is a deficient number, since it is larger than the sum of its proper divisors (1).

312081163 is an equidigital number, since it uses as much as digits as its factorization.

312081163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 312081163 is about 17665.8190582831. The cubic root of 312081163 is about 678.3010956607.

The spelling of 312081163 in words is "three hundred twelve million, eighty-one thousand, one hundred sixty-three".