12624431 has 2 divisors, whose sum is σ = 12624432. Its totient is φ = 12624430.

The previous prime is 12624427. The next prime is 12624461. The reversal of 12624431 is 13442621.

It is a weak prime.

It is an emirp because it is prime and its reverse (13442621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12624431 - 2² = 12624427 is a prime.

It is a super-2 number, since 2×12624431² = 318752516147522, which contains 22 as substring.

It is equal to p₈₂₆₃₁₃ and since 12624431 and 826313 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 12624397 and 12624406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12624461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6312215 + 6312216.

It is an arithmetic number, because the mean of its divisors is an integer number (6312216).

Almost surely, 2^12624431 is an apocalyptic number.

12624431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12624431 is an equidigital number, since it uses as much as digits as its factorization.

12624431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 12624431 is about 3553.0875305852. The cubic root of 12624431 is about 232.8469772011.

The spelling of 12624431 in words is "twelve million, six hundred twenty-four thousand, four hundred thirty-one".