1321131233 has 8 divisors (see below), whose sum is σ = 1358359296. Its totient is φ = 1284141600.

The previous prime is 1321131211. The next prime is 1321131241. The reversal of 1321131233 is 3321311231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321131233 - 2⁸ = 1321130977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321131263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48341 + ... + 70562.

It is an arithmetic number, because the mean of its divisors is an integer number (169794912).

Almost surely, 2^1321131233 is an apocalyptic number.

It is an amenable number.

1321131233 is a deficient number, since it is larger than the sum of its proper divisors (37228063).

1321131233 is a wasteful number, since it uses less digits than its factorization.

1321131233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119215.

The product of its digits is 324, while the sum is 20.

The square root of 1321131233 is about 36347.3689969439. The cubic root of 1321131233 is about 1097.2745843542.

Adding to 1321131233 its reverse (3321311231), we get a palindrome (4642442464).

It can be divided in two parts, 13211 and 31233, that added together give a palindrome (44444).

The spelling of 1321131233 in words is "one billion, three hundred twenty-one million, one hundred thirty-one thousand, two hundred thirty-three".