11885631 has 4 divisors (see below), whose sum is σ = 15847512. Its totient is φ = 7923752.

The previous prime is 11885611. The next prime is 11885633. The reversal of 11885631 is 13658811.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11885631 is a prime.

It is a super-2 number, since 2×11885631² = 282536448536322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11885592 and 11885601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11885633) 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, 1980936 + ... + 1980941.

It is an arithmetic number, because the mean of its divisors is an integer number (3961878).

Almost surely, 2^11885631 is an apocalyptic number.

11885631 is a deficient number, since it is larger than the sum of its proper divisors (3961881).

11885631 is an equidigital number, since it uses as much as digits as its factorization.

11885631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3961880.

The product of its digits is 5760, while the sum is 33.

The square root of 11885631 is about 3447.5543505505. The cubic root of 11885631 is about 228.2131931723.

The spelling of 11885631 in words is "eleven million, eight hundred eighty-five thousand, six hundred thirty-one".