13898331 has 16 divisors (see below), whose sum is σ = 21070720. Its totient is φ = 9049320.

The previous prime is 13898327. The next prime is 13898341. The reversal of 13898331 is 13389831.

It is not a de Polignac number, because 13898331 - 2² = 13898327 is a prime.

It is a super-2 number, since 2×13898331² = 386327209171122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13898341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4825 + ... + 7146.

It is an arithmetic number, because the mean of its divisors is an integer number (1316920).

Almost surely, 2^13898331 is an apocalyptic number.

13898331 is a deficient number, since it is larger than the sum of its proper divisors (7172389).

13898331 is a wasteful number, since it uses less digits than its factorization.

13898331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12023 (or 12017 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 13898331 is about 3728.0465394091. The cubic root of 13898331 is about 240.4293875682.

The spelling of 13898331 in words is "thirteen million, eight hundred ninety-eight thousand, three hundred thirty-one".