1131313233 has 8 divisors (see below), whose sum is σ = 1509384096. Its totient is φ = 753725600.

The previous prime is 1131313201. The next prime is 1131313237. The reversal of 1131313233 is 3323131311.

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 1131313233 - 2⁵ = 1131313201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131313237) 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, 115308 + ... + 124733.

It is an arithmetic number, because the mean of its divisors is an integer number (188673012).

Almost surely, 2^1131313233 is an apocalyptic number.

It is an amenable number.

1131313233 is a deficient number, since it is larger than the sum of its proper divisors (378070863).

1131313233 is a wasteful number, since it uses less digits than its factorization.

1131313233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241615.

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

The square root of 1131313233 is about 33635.0001189237. Note that the first 3 decimals coincide. The cubic root of 1131313233 is about 1041.9837730780.

Adding to 1131313233 its reverse (3323131311), we get a palindrome (4454444544).

The spelling of 1131313233 in words is "one billion, one hundred thirty-one million, three hundred thirteen thousand, two hundred thirty-three".