12981319 has 16 divisors (see below), whose sum is σ = 14938560. Its totient is φ = 11174400.

The previous prime is 12981307. The next prime is 12981329. The reversal of 12981319 is 91318921.

12981319 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12981319 - 2²³ = 4592711 is a prime.

It is a super-2 number, since 2×12981319² = 337029285959522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12981329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33177 + ... + 33565.

It is an arithmetic number, because the mean of its divisors is an integer number (933660).

Almost surely, 2^12981319 is an apocalyptic number.

12981319 is a deficient number, since it is larger than the sum of its proper divisors (1957241).

12981319 is a wasteful number, since it uses less digits than its factorization.

12981319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570.

The product of its digits is 3888, while the sum is 34.

The square root of 12981319 is about 3602.9597555343. The cubic root of 12981319 is about 235.0207858482.

The spelling of 12981319 in words is "twelve million, nine hundred eighty-one thousand, three hundred nineteen".