1223044531 has 4 divisors (see below), whose sum is σ = 1224025000. Its totient is φ = 1222064064.

The previous prime is 1223044523. The next prime is 1223044553. The reversal of 1223044531 is 1354403221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1354403221 = 4567 ⋅296563.

It is a cyclic number.

It is not a de Polignac number, because 1223044531 - 2³ = 1223044523 is a prime.

It is a super-2 number, since 2×1223044531² = 2991675849618019922, 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 = 1223044496 and 1223044505.

It is not an unprimeable number, because it can be changed into a prime (1223044631) 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, 488361 + ... + 490858.

It is an arithmetic number, because the mean of its divisors is an integer number (306006250).

Almost surely, 2^1223044531 is an apocalyptic number.

1223044531 is a deficient number, since it is larger than the sum of its proper divisors (980469).

1223044531 is an equidigital number, since it uses as much as digits as its factorization.

1223044531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980468.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1223044531 is about 34972.0535713875. The cubic root of 1223044531 is about 1069.4178365745.

Adding to 1223044531 its reverse (1354403221), we get a palindrome (2577447752).

The spelling of 1223044531 in words is "one billion, two hundred twenty-three million, forty-four thousand, five hundred thirty-one".