11907431 has 4 divisors (see below), whose sum is σ = 12184392. Its totient is φ = 11630472.

The previous prime is 11907421. The next prime is 11907437. The reversal of 11907431 is 13470911.

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 11907431 - 2¹⁸ = 11645287 is a prime.

It is a super-2 number, since 2×11907431² = 283573826039522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11907431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11907437) 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, 138416 + ... + 138501.

It is an arithmetic number, because the mean of its divisors is an integer number (3046098).

Almost surely, 2^11907431 is an apocalyptic number.

11907431 is a deficient number, since it is larger than the sum of its proper divisors (276961).

11907431 is an equidigital number, since it uses as much as digits as its factorization.

11907431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276960.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 11907431 is about 3450.7145636810. The cubic root of 11907431 is about 228.3526335057.

The spelling of 11907431 in words is "eleven million, nine hundred seven thousand, four hundred thirty-one".