11309331 has 16 divisors (see below), whose sum is σ = 16652160. Its totient is φ = 6769920.

The previous prime is 11309329. The next prime is 11309341. The reversal of 11309331 is 13390311.

It is not a de Polignac number, because 11309331 - 2¹ = 11309329 is a prime.

It is a super-2 number, since 2×11309331² = 255801935335122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11309298 and 11309307.

It is not an unprimeable number, because it can be changed into a prime (11309321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675 + ... + 4803.

It is an arithmetic number, because the mean of its divisors is an integer number (1040760).

Almost surely, 2^11309331 is an apocalyptic number.

11309331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11309331 is a deficient number, since it is larger than the sum of its proper divisors (5342829).

11309331 is a wasteful number, since it uses less digits than its factorization.

11309331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4226.

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 11309331 is about 3362.9348789413. The cubic root of 11309331 is about 224.4634523998.

Adding to 11309331 its reverse (13390311), we get a palindrome (24699642).

The spelling of 11309331 in words is "eleven million, three hundred nine thousand, three hundred thirty-one".