1131230323 has 4 divisors (see below), whose sum is σ = 1144859688. Its totient is φ = 1117600960.

The previous prime is 1131230311. The next prime is 1131230333. The reversal of 1131230323 is 3230321311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131230323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131230323.

It is not an unprimeable number, because it can be changed into a prime (1131230333) 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, 6814558 + ... + 6814723.

It is an arithmetic number, because the mean of its divisors is an integer number (286214922).

Almost surely, 2^1131230323 is an apocalyptic number.

1131230323 is a deficient number, since it is larger than the sum of its proper divisors (13629365).

1131230323 is an equidigital number, since it uses as much as digits as its factorization.

1131230323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13629364.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1131230323 is about 33633.7676004339. The cubic root of 1131230323 is about 1041.9583180043.

Adding to 1131230323 its reverse (3230321311), we get a palindrome (4361551634).

The spelling of 1131230323 in words is "one billion, one hundred thirty-one million, two hundred thirty thousand, three hundred twenty-three".