11983631 has 4 divisors (see below), whose sum is σ = 13073064. Its totient is φ = 10894200.

The previous prime is 11983619. The next prime is 11983663. The reversal of 11983631 is 13638911.

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 11983631 - 2⁶ = 11983567 is a prime.

It is a super-2 number, since 2×11983631² = 287214823888322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11983331) 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, 544700 + ... + 544721.

It is an arithmetic number, because the mean of its divisors is an integer number (3268266).

Almost surely, 2^11983631 is an apocalyptic number.

11983631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11983631 is a deficient number, since it is larger than the sum of its proper divisors (1089433).

11983631 is a wasteful number, since it uses less digits than its factorization.

11983631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089432.

The product of its digits is 3888, while the sum is 32.

The square root of 11983631 is about 3461.7381472318. The cubic root of 11983631 is about 228.8387021002.

The spelling of 11983631 in words is "eleven million, nine hundred eighty-three thousand, six hundred thirty-one".