13601731 has 12 divisors (see below), whose sum is σ = 16102576. Its totient is φ = 11412720.

The previous prime is 13601723. The next prime is 13601789. The reversal of 13601731 is 13710631.

It is not a de Polignac number, because 13601731 - 2³ = 13601723 is a prime.

It is a super-2 number, since 2×13601731² = 370014172392722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13601711) 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, 2751 + ... + 5896.

Almost surely, 2^13601731 is an apocalyptic number.

13601731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13601731 is a deficient number, since it is larger than the sum of its proper divisors (2500845).

13601731 is a wasteful number, since it uses less digits than its factorization.

13601731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8682 (or 8671 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 13601731 is about 3688.0524670888. The cubic root of 13601731 is about 238.7067650118.

Subtracting 13601731 from its reverse (13710631), we obtain a square (108900 = 330²).

The spelling of 13601731 in words is "thirteen million, six hundred one thousand, seven hundred thirty-one".