1123871172 has 48 divisors (see below), whose sum is σ = 2803151232. Its totient is φ = 349592320.

The previous prime is 1123871171. The next prime is 1123871209. The reversal of 1123871172 is 2711783211.

It is a super-2 number, since 2×1123871172² = 2526172822505307168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1123871171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38343 + ... + 60974.

It is an arithmetic number, because the mean of its divisors is an integer number (58398984).

Almost surely, 2^1123871172 is an apocalyptic number.

1123871172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123871172 is an abundant number, since it is smaller than the sum of its proper divisors (1679280060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123871172 is a wasteful number, since it uses less digits than its factorization.

1123871172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99388 (or 99386 counting only the distinct ones).

The product of its digits is 4704, while the sum is 33.

The square root of 1123871172 is about 33524.1878648835. The cubic root of 1123871172 is about 1039.6939348373.

The spelling of 1123871172 in words is "one billion, one hundred twenty-three million, eight hundred seventy-one thousand, one hundred seventy-two".