11775631 has 6 divisors (see below), whose sum is σ = 13698240. Its totient is φ = 10093356.

The previous prime is 11775613. The next prime is 11775641. The reversal of 11775631 is 13657711.

It is a de Polignac number, because none of the positive numbers 2^k-11775631 is a prime.

It is a super-2 number, since 2×11775631² = 277330970896322, 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 = 11775593 and 11775602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11775601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120111 + ... + 120208.

It is an arithmetic number, because the mean of its divisors is an integer number (2283040).

Almost surely, 2^11775631 is an apocalyptic number.

11775631 is a deficient number, since it is larger than the sum of its proper divisors (1922609).

11775631 is an equidigital number, since it uses as much as digits as its factorization.

11775631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240333 (or 240326 counting only the distinct ones).

The product of its digits is 4410, while the sum is 31.

The square root of 11775631 is about 3431.5639291728. The cubic root of 11775631 is about 227.5069820342.

The spelling of 11775631 in words is "eleven million, seven hundred seventy-five thousand, six hundred thirty-one".