11311328 has 24 divisors (see below), whose sum is σ = 25450992. Its totient is φ = 4847616.

The previous prime is 11311319. The next prime is 11311337. The reversal of 11311328 is 82311311.

It is an interprime number because it is at equal distance from previous prime (11311319) and next prime (11311337).

It is a super-2 number, since 2×11311328² = 255892282247168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25025 + ... + 25472.

It is an arithmetic number, because the mean of its divisors is an integer number (1060458).

Almost surely, 2^11311328 is an apocalyptic number.

It is an amenable number.

11311328 is an abundant number, since it is smaller than the sum of its proper divisors (14139664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11311328 is an equidigital number, since it uses as much as digits as its factorization.

11311328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50514 (or 50506 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

The square root of 11311328 is about 3363.2317791077. The cubic root of 11311328 is about 224.4766635300.

Adding to 11311328 its reverse (82311311), we get a palindrome (93622639).

The spelling of 11311328 in words is "eleven million, three hundred eleven thousand, three hundred twenty-eight".