13111398 has 24 divisors (see below), whose sum is σ = 28501200. Its totient is φ = 4356144.

The previous prime is 13111379. The next prime is 13111409. The reversal of 13111398 is 89311131.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5448 + ... + 7476.

It is an arithmetic number, because the mean of its divisors is an integer number (1187550).

Almost surely, 2^13111398 is an apocalyptic number.

13111398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13111398 is an abundant number, since it is smaller than the sum of its proper divisors (15389802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13111398 is a wasteful number, since it uses less digits than its factorization.

13111398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396 (or 2393 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 13111398 is about 3620.9664455778. The cubic root of 13111398 is about 235.8031850429.

The spelling of 13111398 in words is "thirteen million, one hundred eleven thousand, three hundred ninety-eight".