312133139 has 2 divisors, whose sum is σ = 312133140. Its totient is φ = 312133138.

The previous prime is 312133109. The next prime is 312133169. The reversal of 312133139 is 931331213.

It is a balanced prime because it is at equal distance from previous prime (312133109) and next prime (312133169).

It is a cyclic number.

It is not a de Polignac number, because 312133139 - 2⁸ = 312132883 is a prime.

It is not a weakly prime, because it can be changed into another prime (312133109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156066569 + 156066570.

It is an arithmetic number, because the mean of its divisors is an integer number (156066570).

Almost surely, 2^312133139 is an apocalyptic number.

312133139 is a deficient number, since it is larger than the sum of its proper divisors (1).

312133139 is an equidigital number, since it uses as much as digits as its factorization.

312133139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458, while the sum is 26.

The square root of 312133139 is about 17667.2900864847. The cubic root of 312133139 is about 678.3387497765.

The spelling of 312133139 in words is "three hundred twelve million, one hundred thirty-three thousand, one hundred thirty-nine".