12857319 has 32 divisors (see below), whose sum is σ = 20390400. Its totient is φ = 7983360.

The previous prime is 12857297. The next prime is 12857333. The reversal of 12857319 is 91375821.

It is not a de Polignac number, because 12857319 - 2¹² = 12853223 is a prime.

It is a super-2 number, since 2×12857319² = 330621303735522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12852319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36247 + ... + 36599.

It is an arithmetic number, because the mean of its divisors is an integer number (637200).

Almost surely, 2^12857319 is an apocalyptic number.

12857319 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12857319 is the 1917-th nonagonal number.

12857319 is a deficient number, since it is larger than the sum of its proper divisors (7533081).

12857319 is a wasteful number, since it uses less digits than its factorization.

12857319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 446 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 12857319 is about 3585.7103898670. The cubic root of 12857319 is about 234.2700695093.

The spelling of 12857319 in words is "twelve million, eight hundred fifty-seven thousand, three hundred nineteen".