1223231333 has 4 divisors (see below), whose sum is σ = 1276415328. Its totient is φ = 1170047340.

The previous prime is 1223231329. The next prime is 1223231407. The reversal of 1223231333 is 3331323221.

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 1223231333 - 2² = 1223231329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 53183971 = 1223231333 / (1 + 2 + 2 + 3 + 2 + 3 + 1 + 3 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223231299 and 1223231308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223231833) 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, 26591963 + ... + 26592008.

It is an arithmetic number, because the mean of its divisors is an integer number (319103832).

Almost surely, 2^1223231333 is an apocalyptic number.

It is an amenable number.

1223231333 is a deficient number, since it is larger than the sum of its proper divisors (53183995).

1223231333 is an equidigital number, since it uses as much as digits as its factorization.

1223231333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53183994.

The product of its digits is 1944, while the sum is 23.

The square root of 1223231333 is about 34974.7242019147. The cubic root of 1223231333 is about 1069.4722797328.

Adding to 1223231333 its reverse (3331323221), we get a palindrome (4554554554).

The spelling of 1223231333 in words is "one billion, two hundred twenty-three million, two hundred thirty-one thousand, three hundred thirty-three".