1230111243 has 24 divisors (see below), whose sum is σ = 1880186880. Its totient is φ = 772824240.

The previous prime is 1230111203. The next prime is 1230111257. The reversal of 1230111243 is 3421110321.

It is not a de Polignac number, because 1230111243 - 2⁹ = 1230110731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1230111203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13830 + ... + 51492.

It is an arithmetic number, because the mean of its divisors is an integer number (78341120).

Almost surely, 2^1230111243 is an apocalyptic number.

1230111243 is a deficient number, since it is larger than the sum of its proper divisors (650075637).

1230111243 is a wasteful number, since it uses less digits than its factorization.

1230111243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37879 (or 37876 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1230111243 is about 35072.9417500158. The cubic root of 1230111243 is about 1071.4735696225.

Adding to 1230111243 its reverse (3421110321), we get a palindrome (4651221564).

The spelling of 1230111243 in words is "one billion, two hundred thirty million, one hundred eleven thousand, two hundred forty-three".