1131213233 has 8 divisors (see below), whose sum is σ = 1141905600. Its totient is φ = 1120569808.

The previous prime is 1131213217. The next prime is 1131213253. The reversal of 1131213233 is 3323121311.

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 1131213233 - 2⁴ = 1131213217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131213253) 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, 35063 + ... + 59091.

It is an arithmetic number, because the mean of its divisors is an integer number (142738200).

Almost surely, 2^1131213233 is an apocalyptic number.

It is an amenable number.

1131213233 is a deficient number, since it is larger than the sum of its proper divisors (10692367).

1131213233 is a wasteful number, since it uses less digits than its factorization.

1131213233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24471.

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

The square root of 1131213233 is about 33633.5135393256. The cubic root of 1131213233 is about 1041.9530708686.

Adding to 1131213233 its reverse (3323121311), we get a palindrome (4454334544).

The spelling of 1131213233 in words is "one billion, one hundred thirty-one million, two hundred thirteen thousand, two hundred thirty-three".