1223200131 has 12 divisors (see below), whose sum is σ = 1676209752. Its totient is φ = 793424448.

The previous prime is 1223200129. The next prime is 1223200151. The reversal of 1223200131 is 1310023221.

It is not a de Polignac number, because 1223200131 - 2¹ = 1223200129 is a prime.

It is a super-2 number, since 2×1223200131² = 2992437120956834322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1223200131.

It is not an unprimeable number, because it can be changed into a prime (1223200151) 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 11 ways as a sum of consecutive naturals, for example, 144810 + ... + 153023.

It is an arithmetic number, because the mean of its divisors is an integer number (139684146).

Almost surely, 2^1223200131 is an apocalyptic number.

1223200131 is a deficient number, since it is larger than the sum of its proper divisors (453009621).

1223200131 is an equidigital number, since it uses as much as digits as its factorization.

1223200131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297910 (or 297873 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1223200131 is about 34974.2781340802. The cubic root of 1223200131 is about 1069.4631863431.

Adding to 1223200131 its reverse (1310023221), we get a palindrome (2533223352).

The spelling of 1223200131 in words is "one billion, two hundred twenty-three million, two hundred thousand, one hundred thirty-one".