13390331 has 2 divisors, whose sum is σ = 13390332. Its totient is φ = 13390330.

The previous prime is 13390303. The next prime is 13390361. The reversal of 13390331 is 13309331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13390331 - 2¹⁰ = 13389307 is a prime.

It is a super-2 number, since 2×13390331² = 358601928579122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13390297 and 13390306.

It is not a weakly prime, because it can be changed into another prime (13390361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6695165 + 6695166.

It is an arithmetic number, because the mean of its divisors is an integer number (6695166).

Almost surely, 2^13390331 is an apocalyptic number.

13390331 is a deficient number, since it is larger than the sum of its proper divisors (1).

13390331 is an equidigital number, since it uses as much as digits as its factorization.

13390331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 23.

The square root of 13390331 is about 3659.2801204609. The cubic root of 13390331 is about 237.4636309961.

Adding to 13390331 its reverse (13309331), we get a palindrome (26699662).

The spelling of 13390331 in words is "thirteen million, three hundred ninety thousand, three hundred thirty-one".