2321403553 has 4 divisors (see below), whose sum is σ = 2653032640. Its totient is φ = 1989774468.

The previous prime is 2321403479. The next prime is 2321403563. The reversal of 2321403553 is 3553041232.

2321403553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2321403553 - 2²⁹ = 1784532641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2321403563) 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, 165814533 + ... + 165814546.

It is an arithmetic number, because the mean of its divisors is an integer number (663258160).

Almost surely, 2^2321403553 is an apocalyptic number.

It is an amenable number.

2321403553 is a deficient number, since it is larger than the sum of its proper divisors (331629087).

2321403553 is an equidigital number, since it uses as much as digits as its factorization.

2321403553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331629086.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 2321403553 is about 48180.9459537689. The cubic root of 2321403553 is about 1324.0880974548.

Adding to 2321403553 its reverse (3553041232), we get a palindrome (5874444785).

The spelling of 2321403553 in words is "two billion, three hundred twenty-one million, four hundred three thousand, five hundred fifty-three".