312131119 has 2 divisors, whose sum is σ = 312131120. Its totient is φ = 312131118.

The previous prime is 312131087. The next prime is 312131143. The reversal of 312131119 is 911131213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312131119 - 2⁵ = 312131087 is a prime.

It is a super-2 number, since 2×312131119² = 194851670896384322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312131119.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312131189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156065559 + 156065560.

It is an arithmetic number, because the mean of its divisors is an integer number (156065560).

Almost surely, 2^312131119 is an apocalyptic number.

312131119 is a deficient number, since it is larger than the sum of its proper divisors (1).

312131119 is an equidigital number, since it uses as much as digits as its factorization.

312131119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 22.

The square root of 312131119 is about 17667.2329185982. The cubic root of 312131119 is about 678.3372864616.

The spelling of 312131119 in words is "three hundred twelve million, one hundred thirty-one thousand, one hundred nineteen".