13313997 has 8 divisors (see below), whose sum is σ = 19724480. Its totient is φ = 8875980.

The previous prime is 13313983. The next prime is 13314029. The reversal of 13313997 is 79931331.

It is not a de Polignac number, because 13313997 - 2⁶ = 13313933 is a prime.

It is a super-2 number, since 2×13313997² = 354525032232018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13313917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246529 + ... + 246582.

It is an arithmetic number, because the mean of its divisors is an integer number (2465560).

Almost surely, 2^13313997 is an apocalyptic number.

It is an amenable number.

13313997 is a deficient number, since it is larger than the sum of its proper divisors (6410483).

13313997 is an equidigital number, since it uses as much as digits as its factorization.

13313997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493120 (or 493114 counting only the distinct ones).

The product of its digits is 15309, while the sum is 36.

The square root of 13313997 is about 3648.8350195645. The cubic root of 13313997 is about 237.0115360512.

The spelling of 13313997 in words is "thirteen million, three hundred thirteen thousand, nine hundred ninety-seven".