1131230319 has 4 divisors (see below), whose sum is σ = 1508307096. Its totient is φ = 754153544.

The previous prime is 1131230311. The next prime is 1131230333. The reversal of 1131230319 is 9130321311.

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 1131230319 - 2³ = 1131230311 is a prime.

It is a super-2 number, since 2×1131230319² = 2559364069249683522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131230311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188538384 + ... + 188538389.

It is an arithmetic number, because the mean of its divisors is an integer number (377076774).

Almost surely, 2^1131230319 is an apocalyptic number.

1131230319 is a deficient number, since it is larger than the sum of its proper divisors (377076777).

1131230319 is an equidigital number, since it uses as much as digits as its factorization.

1131230319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377076776.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 1131230319 is about 33633.7675409699. The cubic root of 1131230319 is about 1041.9583167762.

The spelling of 1131230319 in words is "one billion, one hundred thirty-one million, two hundred thirty thousand, three hundred nineteen".