11940631 has 4 divisors (see below), whose sum is σ = 11964600. Its totient is φ = 11916664.

The previous prime is 11940601. The next prime is 11940653. The reversal of 11940631 is 13604911.

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 11940631 - 2⁷ = 11940503 is a prime.

It is a super-2 number, since 2×11940631² = 285157337356322, 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 = 11940596 and 11940605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11940601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11221 + ... + 12238.

It is an arithmetic number, because the mean of its divisors is an integer number (2991150).

Almost surely, 2^11940631 is an apocalyptic number.

11940631 is a deficient number, since it is larger than the sum of its proper divisors (23969).

11940631 is an equidigital number, since it uses as much as digits as its factorization.

11940631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23968.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 11940631 is about 3455.5218129828. The cubic root of 11940631 is about 228.5646655923.

The spelling of 11940631 in words is "eleven million, nine hundred forty thousand, six hundred thirty-one".