11726431 has 4 divisors (see below), whose sum is σ = 11891664. Its totient is φ = 11561200.

The previous prime is 11726419. The next prime is 11726437. The reversal of 11726431 is 13462711.

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 11726431 - 2¹⁵ = 11693663 is a prime.

It is a super-2 number, since 2×11726431² = 275018367995522, 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 = 11726396 and 11726405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11726437) 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, 82510 + ... + 82651.

It is an arithmetic number, because the mean of its divisors is an integer number (2972916).

Almost surely, 2^11726431 is an apocalyptic number.

11726431 is a deficient number, since it is larger than the sum of its proper divisors (165233).

11726431 is an equidigital number, since it uses as much as digits as its factorization.

11726431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165232.

The product of its digits is 1008, while the sum is 25.

The square root of 11726431 is about 3424.3876824916. The cubic root of 11726431 is about 227.1896892328.

The spelling of 11726431 in words is "eleven million, seven hundred twenty-six thousand, four hundred thirty-one".