11975431 has 8 divisors (see below), whose sum is σ = 13074320. Its totient is φ = 10901952.

The previous prime is 11975423. The next prime is 11975441. The reversal of 11975431 is 13457911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11975431 - 2³ = 11975423 is a prime.

It is a super-2 number, since 2×11975431² = 286821895271522, 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 = 11975393 and 11975402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11975441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5361 + ... + 7258.

It is an arithmetic number, because the mean of its divisors is an integer number (1634290).

Almost surely, 2^11975431 is an apocalyptic number.

11975431 is a deficient number, since it is larger than the sum of its proper divisors (1098889).

11975431 is a wasteful number, since it uses less digits than its factorization.

11975431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12705.

The product of its digits is 3780, while the sum is 31.

The square root of 11975431 is about 3460.5535684338. The cubic root of 11975431 is about 228.7864946203.

The spelling of 11975431 in words is "eleven million, nine hundred seventy-five thousand, four hundred thirty-one".