13378131 has 12 divisors (see below), whose sum is σ = 20810608. Its totient is φ = 8232624.

The previous prime is 13378067. The next prime is 13378153. The reversal of 13378131 is 13187331.

It is not a de Polignac number, because 13378131 - 2⁶ = 13378067 is a prime.

It is a super-2 number, since 2×13378131² = 357948778106322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13378095 and 13378104.

It is not an unprimeable number, because it can be changed into a prime (13378171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57055 + ... + 57288.

Almost surely, 2^13378131 is an apocalyptic number.

13378131 is a deficient number, since it is larger than the sum of its proper divisors (7432477).

13378131 is a wasteful number, since it uses less digits than its factorization.

13378131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114362 (or 114359 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 13378131 is about 3657.6127460408. The cubic root of 13378131 is about 237.3914909675.

The spelling of 13378131 in words is "thirteen million, three hundred seventy-eight thousand, one hundred thirty-one".