2311326553 has 4 divisors (see below), whose sum is σ = 2313335808. Its totient is φ = 2309317300.

The previous prime is 2311326533. The next prime is 2311326601. The reversal of 2311326553 is 3556231132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2311326553 - 2²⁵ = 2277772121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2311326533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002901 + ... + 1005202.

It is an arithmetic number, because the mean of its divisors is an integer number (578333952).

Almost surely, 2^2311326553 is an apocalyptic number.

It is an amenable number.

2311326553 is a deficient number, since it is larger than the sum of its proper divisors (2009255).

2311326553 is a wasteful number, since it uses less digits than its factorization.

2311326553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009254.

The product of its digits is 16200, while the sum is 31.

The square root of 2311326553 is about 48076.2576850570. The cubic root of 2311326553 is about 1322.1694034659.

Adding to 2311326553 its reverse (3556231132), we get a palindrome (5867557685).

The spelling of 2311326553 in words is "two billion, three hundred eleven million, three hundred twenty-six thousand, five hundred fifty-three".