312252469 has 2 divisors, whose sum is σ = 312252470. Its totient is φ = 312252468.

The previous prime is 312252467. The next prime is 312252511. The reversal of 312252469 is 964252213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310112100 + 2140369 = 17610^2 + 1463^2 .

It is a cyclic number.

It is not a de Polignac number, because 312252469 - 2¹ = 312252467 is a prime.

It is a super-2 number, since 2×312252469² = 195003208793191922, which contains 22 as substring.

Together with 312252467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312252467) 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, 156126234 + 156126235.

It is an arithmetic number, because the mean of its divisors is an integer number (156126235).

Almost surely, 2^312252469 is an apocalyptic number.

It is an amenable number.

312252469 is a deficient number, since it is larger than the sum of its proper divisors (1).

312252469 is an equidigital number, since it uses as much as digits as its factorization.

312252469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 312252469 is about 17670.6669087502. Note that the first 3 decimals coincide. The cubic root of 312252469 is about 678.4251828182.

The spelling of 312252469 in words is "three hundred twelve million, two hundred fifty-two thousand, four hundred sixty-nine".