123271988 has 24 divisors (see below), whose sum is σ = 246984192. Its totient is φ = 52736544.

The previous prime is 123271987. The next prime is 123271991. The reversal of 123271988 is 889172321.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123271987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13370 + ... + 20622.

It is an arithmetic number, because the mean of its divisors is an integer number (10291008).

Almost surely, 2^123271988 is an apocalyptic number.

It is an amenable number.

123271988 is an abundant number, since it is smaller than the sum of its proper divisors (123712204).

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

123271988 is a wasteful number, since it uses less digits than its factorization.

123271988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7871 (or 7869 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 123271988 is about 11102.7919011391. The cubic root of 123271988 is about 497.6852847224.

The spelling of 123271988 in words is "one hundred twenty-three million, two hundred seventy-one thousand, nine hundred eighty-eight".