15312469 has 2 divisors, whose sum is σ = 15312470. Its totient is φ = 15312468.

The previous prime is 15312467. The next prime is 15312497. The reversal of 15312469 is 96421351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15311569 + 900 = 3913^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 15312469 - 2¹ = 15312467 is a prime.

It is a super-2 number, since 2×15312469² = 468943413751922, which contains 22 as substring.

Together with 15312467, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 15312469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15312467) 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, 7656234 + 7656235.

It is an arithmetic number, because the mean of its divisors is an integer number (7656235).

Almost surely, 2^15312469 is an apocalyptic number.

It is an amenable number.

15312469 is a deficient number, since it is larger than the sum of its proper divisors (1).

15312469 is an equidigital number, since it uses as much as digits as its factorization.

15312469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 15312469 is about 3913.1149995879. The cubic root of 15312469 is about 248.3219295195.

The spelling of 15312469 in words is "fifteen million, three hundred twelve thousand, four hundred sixty-nine".