123180988 has 24 divisors (see below), whose sum is σ = 247124864. Its totient is φ = 52628400.

The previous prime is 123180943. The next prime is 123180989. The reversal of 123180988 is 889081321.

It is a super-2 number, since 2×123180988² = 30347111609312288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123180988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123180989) 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, 2623 + ... + 15913.

Almost surely, 2^123180988 is an apocalyptic number.

It is an amenable number.

123180988 is an abundant number, since it is smaller than the sum of its proper divisors (123943876).

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

123180988 is a wasteful number, since it uses less digits than its factorization.

123180988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13633 (or 13631 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 123180988 is about 11098.6930762140. The cubic root of 123180988 is about 497.5627899840.

The spelling of 123180988 in words is "one hundred twenty-three million, one hundred eighty thousand, nine hundred eighty-eight".