312472399 has 2 divisors, whose sum is σ = 312472400. Its totient is φ = 312472398.

The previous prime is 312472351. The next prime is 312472409. The reversal of 312472399 is 993274213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312472399 - 2¹⁷ = 312341327 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312472799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156236199 + 156236200.

It is an arithmetic number, because the mean of its divisors is an integer number (156236200).

Almost surely, 2^312472399 is an apocalyptic number.

312472399 is a deficient number, since it is larger than the sum of its proper divisors (1).

312472399 is an equidigital number, since it uses as much as digits as its factorization.

312472399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 40.

The square root of 312472399 is about 17676.8888382543. Note that the first 4 decimals coincide. The cubic root of 312472399 is about 678.5844247230.

The spelling of 312472399 in words is "three hundred twelve million, four hundred seventy-two thousand, three hundred ninety-nine".