13698331 has 4 divisors (see below), whose sum is σ = 13763464. Its totient is φ = 13633200.

The previous prime is 13698323. The next prime is 13698337. The reversal of 13698331 is 13389631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13389631 = 79 ⋅169489.

It is a cyclic number.

It is not a de Polignac number, because 13698331 - 2³ = 13698323 is a prime.

It is a super-2 number, since 2×13698331² = 375288544371122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13698337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32250 + ... + 32671.

It is an arithmetic number, because the mean of its divisors is an integer number (3440866).

Almost surely, 2^13698331 is an apocalyptic number.

13698331 is a deficient number, since it is larger than the sum of its proper divisors (65133).

13698331 is an equidigital number, since it uses as much as digits as its factorization.

13698331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65132.

The product of its digits is 11664, while the sum is 34.

The square root of 13698331 is about 3701.1256395859. The cubic root of 13698331 is about 239.2705339191.

The spelling of 13698331 in words is "thirteen million, six hundred ninety-eight thousand, three hundred thirty-one".