1131230291 has 8 divisors (see below), whose sum is σ = 1152615168. Its totient is φ = 1109997000.

The previous prime is 1131230257. The next prime is 1131230293. The reversal of 1131230291 is 1920321311.

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 1131230291 - 2³⁰ = 57488467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131230293) 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, 22775 + ... + 52736.

It is an arithmetic number, because the mean of its divisors is an integer number (144076896).

Almost surely, 2^1131230291 is an apocalyptic number.

1131230291 is a deficient number, since it is larger than the sum of its proper divisors (21384877).

1131230291 is an equidigital number, since it uses as much as digits as its factorization.

1131230291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75793.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1131230291 is about 33633.7671247215. The cubic root of 1131230291 is about 1041.9583081794.

The spelling of 1131230291 in words is "one billion, one hundred thirty-one million, two hundred thirty thousand, two hundred ninety-one".