13813331 has 8 divisors (see below), whose sum is σ = 15888480. Its totient is φ = 11763648.

The previous prime is 13813313. The next prime is 13813357. The reversal of 13813331 is 13331831.

It is a happy number.

13813331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13813331 is a prime.

It is a super-2 number, since 2×13813331² = 381616226631122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13813297 and 13813306.

It is not an unprimeable number, because it can be changed into a prime (13810331) 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, 5186 + ... + 7383.

It is an arithmetic number, because the mean of its divisors is an integer number (1986060).

Almost surely, 2^13813331 is an apocalyptic number.

13813331 is a deficient number, since it is larger than the sum of its proper divisors (2075149).

13813331 is a wasteful number, since it uses less digits than its factorization.

13813331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12733.

The product of its digits is 648, while the sum is 23.

The square root of 13813331 is about 3716.6289833665. The cubic root of 13813331 is about 239.9382422114.

The spelling of 13813331 in words is "thirteen million, eight hundred thirteen thousand, three hundred thirty-one".