11323100531 has 4 divisors (see below), whose sum is σ = 11323314192. Its totient is φ = 11322886872.

The previous prime is 11323100527. The next prime is 11323100543. The reversal of 11323100531 is 13500132311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13500132311 = 191 ⋅70681321.

It is a cyclic number.

It is not a de Polignac number, because 11323100531 - 2² = 11323100527 is a prime.

It is a super-2 number, since 2×11323100531² (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 (11323100501) 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, 39221 + ... + 155513.

It is an arithmetic number, because the mean of its divisors is an integer number (2830828548).

Almost surely, 2^11323100531 is an apocalyptic number.

11323100531 is a deficient number, since it is larger than the sum of its proper divisors (213661).

11323100531 is an equidigital number, since it uses as much as digits as its factorization.

11323100531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213660.

The product of its (nonzero) digits is 270, while the sum is 20.

Adding to 11323100531 its reverse (13500132311), we get a palindrome (24823232842).

The spelling of 11323100531 in words is "eleven billion, three hundred twenty-three million, one hundred thousand, five hundred thirty-one".