13137231 has 8 divisors (see below), whose sum is σ = 17923840. Its totient is φ = 8554392.

The previous prime is 13137221. The next prime is 13137233. The reversal of 13137231 is 13273131.

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

It is not a de Polignac number, because 13137231 - 2⁵ = 13137199 is a prime.

It is a super-2 number, since 2×13137231² = 345173676694722, 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 = 13137198 and 13137207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13137233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50791 + ... + 51048.

It is an arithmetic number, because the mean of its divisors is an integer number (2240480).

Almost surely, 2^13137231 is an apocalyptic number.

13137231 is a deficient number, since it is larger than the sum of its proper divisors (4786609).

13137231 is a wasteful number, since it uses less digits than its factorization.

13137231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101885.

The product of its digits is 378, while the sum is 21.

The square root of 13137231 is about 3624.5318318370. The cubic root of 13137231 is about 235.9579487941.

The spelling of 13137231 in words is "thirteen million, one hundred thirty-seven thousand, two hundred thirty-one".