1223022331 has 4 divisors (see below), whose sum is σ = 1226072664. Its totient is φ = 1219972000.

The previous prime is 1223022299. The next prime is 1223022341. The reversal of 1223022331 is 1332203221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1332203221 = 19 ⋅70115959.

It is a cyclic number.

It is not a de Polignac number, because 1223022331 - 2⁵ = 1223022299 is a prime.

It is a super-2 number, since 2×1223022331² = 2991567244249347122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223022299 and 1223022308.

It is not an unprimeable number, because it can be changed into a prime (1223022341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1524565 + ... + 1525366.

It is an arithmetic number, because the mean of its divisors is an integer number (306518166).

Almost surely, 2^1223022331 is an apocalyptic number.

1223022331 is a deficient number, since it is larger than the sum of its proper divisors (3050333).

1223022331 is an equidigital number, since it uses as much as digits as its factorization.

1223022331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050332.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1223022331 is about 34971.7361736589. The cubic root of 1223022331 is about 1069.4113660498.

Adding to 1223022331 its reverse (1332203221), we get a palindrome (2555225552).

The spelling of 1223022331 in words is "one billion, two hundred twenty-three million, twenty-two thousand, three hundred thirty-one".