13006631 has 4 divisors (see below), whose sum is σ = 14189064. Its totient is φ = 11824200.

The previous prime is 13006627. The next prime is 13006667. The reversal of 13006631 is 13660031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13006631 - 2² = 13006627 is a prime.

It is a super-2 number, since 2×13006631² = 338344899940322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13006691) 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, 591200 + ... + 591221.

It is an arithmetic number, because the mean of its divisors is an integer number (3547266).

Almost surely, 2^13006631 is an apocalyptic number.

13006631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13006631 is a deficient number, since it is larger than the sum of its proper divisors (1182433).

13006631 is a wasteful number, since it uses less digits than its factorization.

13006631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182432.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 13006631 is about 3606.4707124833. The cubic root of 13006631 is about 235.1734406953.

Adding to 13006631 its reverse (13660031), we get a palindrome (26666662).

The spelling of 13006631 in words is "thirteen million, six thousand, six hundred thirty-one".