12631091 has 8 divisors (see below), whose sum is σ = 13810368. Its totient is φ = 11457000.

The previous prime is 12631079. The next prime is 12631111. The reversal of 12631091 is 19013621.

It is a happy number.

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 12631091 - 2¹⁰ = 12630067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12631001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5276 + ... + 7286.

It is an arithmetic number, because the mean of its divisors is an integer number (1726296).

Almost surely, 2^12631091 is an apocalyptic number.

12631091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12631091 is a deficient number, since it is larger than the sum of its proper divisors (1179277).

12631091 is a wasteful number, since it uses less digits than its factorization.

12631091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 12631091 is about 3554.0246200610. The cubic root of 12631091 is about 232.8879160296.

The spelling of 12631091 in words is "twelve million, six hundred thirty-one thousand, ninety-one".