11431324309 has 4 divisors (see below), whose sum is σ = 11433831904. Its totient is φ = 11428816716.

The previous prime is 11431324301. The next prime is 11431324337. The reversal of 11431324309 is 90342313411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11431324309 - 2³ = 11431324301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431324301) 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, 1246947 + ... + 1256080.

It is an arithmetic number, because the mean of its divisors is an integer number (2858457976).

Almost surely, 2^11431324309 is an apocalyptic number.

It is an amenable number.

11431324309 is a deficient number, since it is larger than the sum of its proper divisors (2507595).

11431324309 is an equidigital number, since it uses as much as digits as its factorization.

11431324309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507594.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 11431324309 in words is "eleven billion, four hundred thirty-one million, three hundred twenty-four thousand, three hundred nine".