1131231333 has 16 divisors (see below), whose sum is σ = 1628161920. Its totient is φ = 696489024.

The previous prime is 1131231317. The next prime is 1131231337. The reversal of 1131231333 is 3331321311.

It is not a de Polignac number, because 1131231333 - 2⁴ = 1131231317 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131231337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280666 + ... + 284667.

It is an arithmetic number, because the mean of its divisors is an integer number (101760120).

Almost surely, 2^1131231333 is an apocalyptic number.

It is an amenable number.

1131231333 is a deficient number, since it is larger than the sum of its proper divisors (496930587).

1131231333 is a wasteful number, since it uses less digits than its factorization.

1131231333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565388.

The product of its digits is 486, while the sum is 21.

The square root of 1131231333 is about 33633.7826151029. The cubic root of 1131231333 is about 1041.9586281026.

Adding to 1131231333 its reverse (3331321311), we get a palindrome (4462552644).

The spelling of 1131231333 in words is "one billion, one hundred thirty-one million, two hundred thirty-one thousand, three hundred thirty-three".