312838091 has 2 divisors, whose sum is σ = 312838092. Its totient is φ = 312838090.

The previous prime is 312838067. The next prime is 312838093. The reversal of 312838091 is 190838213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312838091 - 2²² = 308643787 is a prime.

Together with 312838093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312838093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156419045 + 156419046.

It is an arithmetic number, because the mean of its divisors is an integer number (156419046).

Almost surely, 2^312838091 is an apocalyptic number.

312838091 is a deficient number, since it is larger than the sum of its proper divisors (1).

312838091 is an equidigital number, since it uses as much as digits as its factorization.

312838091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 312838091 is about 17687.2296021734. The cubic root of 312838091 is about 678.8490413240.

The spelling of 312838091 in words is "three hundred twelve million, eight hundred thirty-eight thousand, ninety-one".