12531019 has 2 divisors, whose sum is σ = 12531020. Its totient is φ = 12531018.

The previous prime is 12531007. The next prime is 12531041. The reversal of 12531019 is 91013521.

It is an a-pointer prime, because the next prime (12531041) can be obtained adding 12531019 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12531019 - 2⁷ = 12530891 is a prime.

It is a super-2 number, since 2×12531019² = 314052874356722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12531919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6265509 + 6265510.

It is an arithmetic number, because the mean of its divisors is an integer number (6265510).

Almost surely, 2^12531019 is an apocalyptic number.

12531019 is a deficient number, since it is larger than the sum of its proper divisors (1).

12531019 is an equidigital number, since it uses as much as digits as its factorization.

12531019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 12531019 is about 3539.9179369019. The cubic root of 12531019 is about 232.2712530322.

The spelling of 12531019 in words is "twelve million, five hundred thirty-one thousand, nineteen".