1123867871 has 6 divisors (see below), whose sum is σ = 1307356560. Its totient is φ = 963315276.

The previous prime is 1123867867. The next prime is 1123867889. The reversal of 1123867871 is 1787683211.

It is not a de Polignac number, because 1123867871 - 2² = 1123867867 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123864871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11467991 + ... + 11468088.

It is an arithmetic number, because the mean of its divisors is an integer number (217892760).

Almost surely, 2^1123867871 is an apocalyptic number.

1123867871 is a deficient number, since it is larger than the sum of its proper divisors (183488689).

1123867871 is an equidigital number, since it uses as much as digits as its factorization.

1123867871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22936093 (or 22936086 counting only the distinct ones).

The product of its digits is 112896, while the sum is 44.

The square root of 1123867871 is about 33524.1386317382. The cubic root of 1123867871 is about 1039.6929169172.

The spelling of 1123867871 in words is "one billion, one hundred twenty-three million, eight hundred sixty-seven thousand, eight hundred seventy-one".