11289306331 has 4 divisors (see below), whose sum is σ = 11953383192. Its totient is φ = 10625229472.

The previous prime is 11289306299. The next prime is 11289306359. The reversal of 11289306331 is 13360398211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13360398211 = 41 ⋅325863371.

It is a cyclic number.

It is not a de Polignac number, because 11289306331 - 2⁵ = 11289306299 is a prime.

It is a super-2 number, since 2×11289306331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11289306631) 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, 332038405 + ... + 332038438.

It is an arithmetic number, because the mean of its divisors is an integer number (2988345798).

Almost surely, 2^11289306331 is an apocalyptic number.

11289306331 is a deficient number, since it is larger than the sum of its proper divisors (664076861).

11289306331 is an equidigital number, since it uses as much as digits as its factorization.

11289306331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664076860.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 11289306331 in words is "eleven billion, two hundred eighty-nine million, three hundred six thousand, three hundred thirty-one".