123608881 has 6 divisors (see below), whose sum is σ = 135867746. Its totient is φ = 112371600.

The previous prime is 123608869. The next prime is 123608893. The reversal of 123608881 is 188806321.

It is an interprime number because it is at equal distance from previous prime (123608869) and next prime (123608893).

It can be written as a sum of positive squares in only one way, i.e., 89491600 + 34117281 = 9460^2 + 5841^2 .

It is not a de Polignac number, because 123608881 - 2⁹ = 123608369 is a prime.

It is a super-3 number, since 3×123608881³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123608881.

It is not an unprimeable number, because it can be changed into a prime (123608801) 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, 510660 + ... + 510901.

Almost surely, 2^123608881 is an apocalyptic number.

123608881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123608881 is a deficient number, since it is larger than the sum of its proper divisors (12258865).

123608881 is a wasteful number, since it uses less digits than its factorization.

123608881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021583 (or 1021572 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 123608881 is about 11117.9530939827. The cubic root of 123608881 is about 498.1382510524.

The spelling of 123608881 in words is "one hundred twenty-three million, six hundred eight thousand, eight hundred eighty-one".