13131394 has 16 divisors (see below), whose sum is σ = 21088800. Its totient is φ = 6113664.

The previous prime is 13131373. The next prime is 13131401. The reversal of 13131394 is 49313131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687 + ... + 5170.

It is an arithmetic number, because the mean of its divisors is an integer number (1318050).

Almost surely, 2^13131394 is an apocalyptic number.

13131394 is a deficient number, since it is larger than the sum of its proper divisors (7957406).

13131394 is a wasteful number, since it uses less digits than its factorization.

13131394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5937.

The product of its digits is 972, while the sum is 25.

The square root of 13131394 is about 3623.7265349361. The cubic root of 13131394 is about 235.9229974771.

The spelling of 13131394 in words is "thirteen million, one hundred thirty-one thousand, three hundred ninety-four".