1323233653 has 4 divisors (see below), whose sum is σ = 1512267040. Its totient is φ = 1134200268.

The previous prime is 1323233617. The next prime is 1323233657. The reversal of 1323233653 is 3563323231.

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 1323233653 - 2²⁹ = 786362741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323233657) 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, 94516683 + ... + 94516696.

It is an arithmetic number, because the mean of its divisors is an integer number (378066760).

Almost surely, 2^1323233653 is an apocalyptic number.

It is an amenable number.

1323233653 is a deficient number, since it is larger than the sum of its proper divisors (189033387).

1323233653 is an equidigital number, since it uses as much as digits as its factorization.

1323233653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189033386.

The product of its digits is 29160, while the sum is 31.

The square root of 1323233653 is about 36376.2787129195. The cubic root of 1323233653 is about 1097.8563356394.

Adding to 1323233653 its reverse (3563323231), we get a palindrome (4886556884).

The spelling of 1323233653 in words is "one billion, three hundred twenty-three million, two hundred thirty-three thousand, six hundred fifty-three".