1123230019 has 4 divisors (see below), whose sum is σ = 1123431544. Its totient is φ = 1123028496.

The previous prime is 1123229993. The next prime is 1123230041. The reversal of 1123230019 is 9100323211.

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 1123230019 - 2²³ = 1114841411 is a prime.

It is a super-2 number, since 2×1123230019² = 2523291351165480722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123230089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92157 + ... + 103630.

It is an arithmetic number, because the mean of its divisors is an integer number (280857886).

Almost surely, 2^1123230019 is an apocalyptic number.

1123230019 is a deficient number, since it is larger than the sum of its proper divisors (201525).

1123230019 is an equidigital number, since it uses as much as digits as its factorization.

1123230019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201524.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1123230019 is about 33514.6239573115. The cubic root of 1123230019 is about 1039.4961868792.

The spelling of 1123230019 in words is "one billion, one hundred twenty-three million, two hundred thirty thousand, nineteen".