13458331 has 2 divisors, whose sum is σ = 13458332. Its totient is φ = 13458330.

The previous prime is 13458323. The next prime is 13458337. The reversal of 13458331 is 13385431.

It is a strong prime.

It is an emirp because it is prime and its reverse (13385431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13458331 - 2³ = 13458323 is a prime.

It is a super-2 number, since 2×13458331² = 362253346611122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13458331.

It is not a weakly prime, because it can be changed into another prime (13458337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6729165 + 6729166.

It is an arithmetic number, because the mean of its divisors is an integer number (6729166).

Almost surely, 2^13458331 is an apocalyptic number.

13458331 is a deficient number, since it is larger than the sum of its proper divisors (1).

13458331 is an equidigital number, since it uses as much as digits as its factorization.

13458331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 13458331 is about 3668.5597991582. The cubic root of 13458331 is about 237.8649222914.

Subtracting from 13458331 its reverse (13385431), we obtain a square (72900 = 270²).

The spelling of 13458331 in words is "thirteen million, four hundred fifty-eight thousand, three hundred thirty-one".