13137631 has 8 divisors (see below), whose sum is σ = 14381024. Its totient is φ = 11927520.

The previous prime is 13137629. The next prime is 13137643. The reversal of 13137631 is 13673131.

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

It is a cyclic number.

It is not a de Polignac number, because 13137631 - 2¹ = 13137629 is a prime.

It is a super-2 number, since 2×13137631² = 345194696584322, 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 = 13137596 and 13137605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13137611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7491 + ... + 9076.

It is an arithmetic number, because the mean of its divisors is an integer number (1797628).

Almost surely, 2^13137631 is an apocalyptic number.

13137631 is a deficient number, since it is larger than the sum of its proper divisors (1243393).

13137631 is a wasteful number, since it uses less digits than its factorization.

13137631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16641.

The product of its digits is 1134, while the sum is 25.

The square root of 13137631 is about 3624.5870109572. The cubic root of 13137631 is about 235.9603435713.

The spelling of 13137631 in words is "thirteen million, one hundred thirty-seven thousand, six hundred thirty-one".