1233121323 has 8 divisors (see below), whose sum is σ = 1879042048. Its totient is φ = 704640744.

The previous prime is 1233121321. The next prime is 1233121343. The reversal of 1233121323 is 3231213321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1233121323 - 2¹ = 1233121321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 58720063 = 1233121323 / (1 + 2 + 3 + 3 + 1 + 2 + 1 + 3 + 2 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1233121323.

It is not an unprimeable number, because it can be changed into a prime (1233121321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29360011 + ... + 29360052.

It is an arithmetic number, because the mean of its divisors is an integer number (234880256).

Almost surely, 2^1233121323 is an apocalyptic number.

1233121323 is a deficient number, since it is larger than the sum of its proper divisors (645920725).

1233121323 is an equidigital number, since it uses as much as digits as its factorization.

1233121323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58720073.

The product of its digits is 648, while the sum is 21.

The square root of 1233121323 is about 35115.8272435664. The cubic root of 1233121323 is about 1072.3468223596.

Adding to 1233121323 its reverse (3231213321), we get a palindrome (4464334644).

The spelling of 1233121323 in words is "one billion, two hundred thirty-three million, one hundred twenty-one thousand, three hundred twenty-three".