12631771 has 4 divisors (see below), whose sum is σ = 12669592. Its totient is φ = 12593952.

The previous prime is 12631769. The next prime is 12631777. The reversal of 12631771 is 17713621.

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 12631771 - 2¹ = 12631769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12631777) 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, 18405 + ... + 19078.

It is an arithmetic number, because the mean of its divisors is an integer number (3167398).

Almost surely, 2^12631771 is an apocalyptic number.

12631771 is a deficient number, since it is larger than the sum of its proper divisors (37821).

12631771 is an equidigital number, since it uses as much as digits as its factorization.

12631771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37820.

The product of its digits is 1764, while the sum is 28.

The square root of 12631771 is about 3554.1202849650. The cubic root of 12631771 is about 232.8920951604.

The spelling of 12631771 in words is "twelve million, six hundred thirty-one thousand, seven hundred seventy-one".