1233223131 has 24 divisors (see below), whose sum is σ = 1995922944. Its totient is φ = 674058000.

The previous prime is 1233223109. The next prime is 1233223171. The reversal of 1233223131 is 1313223321.

It is not a de Polignac number, because 1233223131 - 2⁶ = 1233223067 is a prime.

It is a super-2 number, since 2×1233223131² = 3041678581666886322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1233223098 and 1233223107.

It is not an unprimeable number, because it can be changed into a prime (1233223171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178995 + ... + 185756.

It is an arithmetic number, because the mean of its divisors is an integer number (83163456).

Almost surely, 2^1233223131 is an apocalyptic number.

1233223131 is a deficient number, since it is larger than the sum of its proper divisors (762699813).

1233223131 is a wasteful number, since it uses less digits than its factorization.

1233223131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364791 (or 364784 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 1233223131 is about 35117.2768164048. The cubic root of 1233223131 is about 1072.3763329678.

Adding to 1233223131 its reverse (1313223321), we get a palindrome (2546446452).

The spelling of 1233223131 in words is "one billion, two hundred thirty-three million, two hundred twenty-three thousand, one hundred thirty-one".