13040623 has 2 divisors, whose sum is σ = 13040624. Its totient is φ = 13040622.

The previous prime is 13040617. The next prime is 13040627. The reversal of 13040623 is 32604031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13040623 - 2¹⁷ = 12909551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13040623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13040627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6520311 + 6520312.

It is an arithmetic number, because the mean of its divisors is an integer number (6520312).

Almost surely, 2^13040623 is an apocalyptic number.

13040623 is a deficient number, since it is larger than the sum of its proper divisors (1).

13040623 is an equidigital number, since it uses as much as digits as its factorization.

13040623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 13040623 is about 3611.1802779701. The cubic root of 13040623 is about 235.3781327415.

Adding to 13040623 its reverse (32604031), we get a palindrome (45644654).

The spelling of 13040623 in words is "thirteen million, forty thousand, six hundred twenty-three".