12631019 has 2 divisors, whose sum is σ = 12631020. Its totient is φ = 12631018.

The previous prime is 12631001. The next prime is 12631057. The reversal of 12631019 is 91013621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12631019 - 2¹² = 12626923 is a prime.

It is a super-2 number, since 2×12631019² = 319085281956722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12630985 and 12631003.

It is not a weakly prime, because it can be changed into another prime (12631079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6315509 + 6315510.

It is an arithmetic number, because the mean of its divisors is an integer number (6315510).

Almost surely, 2^12631019 is an apocalyptic number.

12631019 is a deficient number, since it is larger than the sum of its proper divisors (1).

12631019 is an equidigital number, since it uses as much as digits as its factorization.

12631019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 12631019 is about 3554.0144906851. The cubic root of 12631019 is about 232.8874735247.

The spelling of 12631019 in words is "twelve million, six hundred thirty-one thousand, nineteen".