11944431 has 6 divisors (see below), whose sum is σ = 17253080. Its totient is φ = 7962948.

The previous prime is 11944417. The next prime is 11944441. The reversal of 11944431 is 13444911.

It is not a de Polignac number, because 11944431 - 2⁵ = 11944399 is a prime.

It is a super-2 number, since 2×11944431² = 285338863827522, 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 = 11944395 and 11944404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11944441) 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, 663571 + ... + 663588.

Almost surely, 2^11944431 is an apocalyptic number.

11944431 is a deficient number, since it is larger than the sum of its proper divisors (5308649).

11944431 is a wasteful number, since it uses less digits than its factorization.

11944431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327165 (or 1327162 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 11944431 is about 3456.0716138414. The cubic root of 11944431 is about 228.5889092472.

It can be divided in two parts, 1194 and 4431, that added together give a square (5625 = 75²).

The spelling of 11944431 in words is "eleven million, nine hundred forty-four thousand, four hundred thirty-one".