11523351 has 24 divisors (see below), whose sum is σ = 18175872. Its totient is φ = 6361200.

The previous prime is 11523307. The next prime is 11523359. The reversal of 11523351 is 15332511.

It is not a de Polignac number, because 11523351 - 2⁷ = 11523223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11523359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19896 + ... + 20466.

It is an arithmetic number, because the mean of its divisors is an integer number (757328).

Almost surely, 2^11523351 is an apocalyptic number.

11523351 is a deficient number, since it is larger than the sum of its proper divisors (6652521).

11523351 is an equidigital number, since it uses as much as digits as its factorization.

11523351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 612 counting only the distinct ones).

The product of its digits is 450, while the sum is 21.

The square root of 11523351 is about 3394.6061627234. The cubic root of 11523351 is about 225.8705435010.

Adding to 11523351 its reverse (15332511), we get a palindrome (26855862).

The spelling of 11523351 in words is "eleven million, five hundred twenty-three thousand, three hundred fifty-one".