1223244131 has 4 divisors (see below), whose sum is σ = 1225921272. Its totient is φ = 1220566992.

The previous prime is 1223244119. The next prime is 1223244133. The reversal of 1223244131 is 1314423221.

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

It is a cyclic number.

It is not a de Polignac number, because 1223244131 - 2⁶ = 1223244067 is a prime.

It is a super-2 number, since 2×1223244131² = 2992652408051890322, 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 = 1223244097 and 1223244106.

It is not an unprimeable number, because it can be changed into a prime (1223244133) 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, 1337885 + ... + 1338798.

It is an arithmetic number, because the mean of its divisors is an integer number (306480318).

Almost surely, 2^1223244131 is an apocalyptic number.

1223244131 is a deficient number, since it is larger than the sum of its proper divisors (2677141).

1223244131 is an equidigital number, since it uses as much as digits as its factorization.

1223244131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677140.

The product of its digits is 1152, while the sum is 23.

The square root of 1223244131 is about 34974.9071621355. The cubic root of 1223244131 is about 1069.4760094875.

Adding to 1223244131 its reverse (1314423221), we get a palindrome (2537667352).

The spelling of 1223244131 in words is "one billion, two hundred twenty-three million, two hundred forty-four thousand, one hundred thirty-one".