1223333131 has 6 divisors (see below), whose sum is σ = 1278834620. Its totient is φ = 1170144228.

The previous prime is 1223333123. The next prime is 1223333159. The reversal of 1223333131 is 1313333221.

It is not a de Polignac number, because 1223333131 - 2³ = 1223333123 is a prime.

It is a super-2 number, since 2×1223333131² = 2993087898804526322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223333231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1155741 + ... + 1156798.

Almost surely, 2^1223333131 is an apocalyptic number.

1223333131 is a deficient number, since it is larger than the sum of its proper divisors (55501489).

1223333131 is an equidigital number, since it uses as much as digits as its factorization.

1223333131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2312585 (or 2312562 counting only the distinct ones).

The product of its digits is 972, while the sum is 22.

The square root of 1223333131 is about 34976.1794797545. The cubic root of 1223333131 is about 1069.5019462716.

Adding to 1223333131 its reverse (1313333221), we get a palindrome (2536666352).

The spelling of 1223333131 in words is "one billion, two hundred twenty-three million, three hundred thirty-three thousand, one hundred thirty-one".