312323149 has 2 divisors, whose sum is σ = 312323150. Its totient is φ = 312323148.

The previous prime is 312323119. The next prime is 312323153. The reversal of 312323149 is 941323213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312228900 + 94249 = 17670^2 + 307^2 .

It is a cyclic number.

It is not a de Polignac number, because 312323149 - 2⁷ = 312323021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312323119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156161574 + 156161575.

It is an arithmetic number, because the mean of its divisors is an integer number (156161575).

Almost surely, 2^312323149 is an apocalyptic number.

It is an amenable number.

312323149 is a deficient number, since it is larger than the sum of its proper divisors (1).

312323149 is an equidigital number, since it uses as much as digits as its factorization.

312323149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

The square root of 312323149 is about 17672.6667201076. Note that the first 3 decimals coincide. The cubic root of 312323149 is about 678.4763673340.

The spelling of 312323149 in words is "three hundred twelve million, three hundred twenty-three thousand, one hundred forty-nine".