11631641 has 4 divisors (see below), whose sum is σ = 13293312. Its totient is φ = 9969972.

The previous prime is 11631637. The next prime is 11631643. The reversal of 11631641 is 14613611.

11631641 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11631641 - 2² = 11631637 is a prime.

It is a Duffinian number.

11631641 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (11631643) 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, 830825 + ... + 830838.

It is an arithmetic number, because the mean of its divisors is an integer number (3323328).

Almost surely, 2^11631641 is an apocalyptic number.

It is an amenable number.

11631641 is a deficient number, since it is larger than the sum of its proper divisors (1661671).

11631641 is an equidigital number, since it uses as much as digits as its factorization.

11631641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661670.

The product of its digits is 432, while the sum is 23.

The square root of 11631641 is about 3410.5191686897. The cubic root of 11631641 is about 226.5758736236.

The spelling of 11631641 in words is "eleven million, six hundred thirty-one thousand, six hundred forty-one".