11431274609 has 4 divisors (see below), whose sum is σ = 11488718400. Its totient is φ = 11373830820.

The previous prime is 11431274593. The next prime is 11431274651. The reversal of 11431274609 is 90647213411.

11431274609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11431274609 - 2⁴ = 11431274593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11431279609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28721597 + ... + 28721994.

It is an arithmetic number, because the mean of its divisors is an integer number (2872179600).

Almost surely, 2^11431274609 is an apocalyptic number.

It is an amenable number.

11431274609 is a deficient number, since it is larger than the sum of its proper divisors (57443791).

11431274609 is an equidigital number, since it uses as much as digits as its factorization.

11431274609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57443790.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 11431274609 in words is "eleven billion, four hundred thirty-one million, two hundred seventy-four thousand, six hundred nine".