1223044131 has 4 divisors (see below), whose sum is σ = 1630725512. Its totient is φ = 815362752.

The previous prime is 1223044129. The next prime is 1223044177. The reversal of 1223044131 is 1314403221.

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

It is not a de Polignac number, because 1223044131 - 2¹ = 1223044129 is a prime.

It is a super-2 number, since 2×1223044131² = 2991673892747090322, 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 = 1223044098 and 1223044107.

It is not an unprimeable number, because it can be changed into a prime (1223044631) 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, 203840686 + ... + 203840691.

It is an arithmetic number, because the mean of its divisors is an integer number (407681378).

Almost surely, 2^1223044131 is an apocalyptic number.

1223044131 is a deficient number, since it is larger than the sum of its proper divisors (407681381).

1223044131 is an equidigital number, since it uses as much as digits as its factorization.

1223044131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407681380.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1223044131 is about 34972.0478525350. The cubic root of 1223044131 is about 1069.4177199892.

Adding to 1223044131 its reverse (1314403221), we get a palindrome (2537447352).

The spelling of 1223044131 in words is "one billion, two hundred twenty-three million, forty-four thousand, one hundred thirty-one".