13589731 has 4 divisors (see below), whose sum is σ = 14305000. Its totient is φ = 12874464.

The previous prime is 13589713. The next prime is 13589743. The reversal of 13589731 is 13798531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13798531 = 151 ⋅91381.

It is a cyclic number.

It is not a de Polignac number, because 13589731 - 2⁵ = 13589699 is a prime.

It is a super-2 number, since 2×13589731² = 369361577304722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13589701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357606 + ... + 357643.

It is an arithmetic number, because the mean of its divisors is an integer number (3576250).

Almost surely, 2^13589731 is an apocalyptic number.

13589731 is the 2332-nd centered pentagonal number.

13589731 is a deficient number, since it is larger than the sum of its proper divisors (715269).

13589731 is an equidigital number, since it uses as much as digits as its factorization.

13589731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715268.

The product of its digits is 22680, while the sum is 37.

The square root of 13589731 is about 3686.4252332036. The cubic root of 13589731 is about 238.6365454203.

The spelling of 13589731 in words is "thirteen million, five hundred eighty-nine thousand, seven hundred thirty-one".