1131321233 has 8 divisors (see below), whose sum is σ = 1337522880. Its totient is φ = 936265680.

The previous prime is 1131321211. The next prime is 1131321251. The reversal of 1131321233 is 3321231311.

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

It is not a de Polignac number, because 1131321233 - 2¹⁰ = 1131320209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131321833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2786303 + ... + 2786708.

It is an arithmetic number, because the mean of its divisors is an integer number (167190360).

Almost surely, 2^1131321233 is an apocalyptic number.

It is an amenable number.

1131321233 is a deficient number, since it is larger than the sum of its proper divisors (206201647).

1131321233 is an equidigital number, since it uses as much as digits as its factorization.

1131321233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573047.

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

The square root of 1131321233 is about 33635.1190424532. The cubic root of 1131321233 is about 1041.9862291766.

Adding to 1131321233 its reverse (3321231311), we get a palindrome (4452552544).

The spelling of 1131321233 in words is "one billion, one hundred thirty-one million, three hundred twenty-one thousand, two hundred thirty-three".