1223231033 has 4 divisors (see below), whose sum is σ = 1223371380. Its totient is φ = 1223090688.

The previous prime is 1223231021. The next prime is 1223231059. The reversal of 1223231033 is 3301323221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1089528064 + 133702969 = 33008^2 + 11563^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223231033 - 2¹⁰ = 1223230009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223230996 and 1223231014.

It is not an unprimeable number, because it can be changed into a prime (1223231833) 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, 56168 + ... + 74841.

It is an arithmetic number, because the mean of its divisors is an integer number (305842845).

Almost surely, 2^1223231033 is an apocalyptic number.

It is an amenable number.

1223231033 is a deficient number, since it is larger than the sum of its proper divisors (140347).

1223231033 is an equidigital number, since it uses as much as digits as its factorization.

1223231033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140346.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1223231033 is about 34974.7199131029. The cubic root of 1223231033 is about 1069.4721923027.

Adding to 1223231033 its reverse (3301323221), we get a palindrome (4524554254).

The spelling of 1223231033 in words is "one billion, two hundred twenty-three million, two hundred thirty-one thousand, thirty-three".