11140431 has 4 divisors (see below), whose sum is σ = 14853912. Its totient is φ = 7426952.

The previous prime is 11140421. The next prime is 11140447. The reversal of 11140431 is 13404111.

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 11140431 - 2⁵ = 11140399 is a prime.

It is a super-2 number, since 2×11140431² = 248218405731522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11140431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11140421) 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, 1856736 + ... + 1856741.

It is an arithmetic number, because the mean of its divisors is an integer number (3713478).

Almost surely, 2^11140431 is an apocalyptic number.

11140431 is a deficient number, since it is larger than the sum of its proper divisors (3713481).

11140431 is an equidigital number, since it uses as much as digits as its factorization.

11140431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713480.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 11140431 is about 3337.7284191498. The cubic root of 11140431 is about 223.3404212993.

Adding to 11140431 its reverse (13404111), we get a palindrome (24544542).

The spelling of 11140431 in words is "eleven million, one hundred forty thousand, four hundred thirty-one".