1131232223 has 4 divisors (see below), whose sum is σ = 1234071528. Its totient is φ = 1028392920.

The previous prime is 1131232213. The next prime is 1131232229. The reversal of 1131232223 is 3222321311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1131232223 - 2⁸ = 1131231967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131232195 and 1131232204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131232229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51419636 + ... + 51419657.

It is an arithmetic number, because the mean of its divisors is an integer number (308517882).

Almost surely, 2^1131232223 is an apocalyptic number.

1131232223 is a deficient number, since it is larger than the sum of its proper divisors (102839305).

1131232223 is a wasteful number, since it uses less digits than its factorization.

1131232223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102839304.

The product of its digits is 432, while the sum is 20.

The square root of 1131232223 is about 33633.7958458453. The cubic root of 1131232223 is about 1041.9589013573.

Adding to 1131232223 its reverse (3222321311), we get a palindrome (4353553534).

The spelling of 1131232223 in words is "one billion, one hundred thirty-one million, two hundred thirty-two thousand, two hundred twenty-three".