123011568 has 40 divisors (see below), whose sum is σ = 353090000. Its totient is φ = 41003712.

The previous prime is 123011509. The next prime is 123011579. The reversal of 123011568 is 865110321.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141943 + ... + 142806.

It is an arithmetic number, because the mean of its divisors is an integer number (8827250).

Almost surely, 2^123011568 is an apocalyptic number.

123011568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

123011568 is an abundant number, since it is smaller than the sum of its proper divisors (230078432).

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

123011568 is a wasteful number, since it uses less digits than its factorization.

123011568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284766 (or 284754 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 123011568 is about 11091.0580198645. The cubic root of 123011568 is about 497.3345735861.

Adding to 123011568 its reverse (865110321), we get a palindrome (988121889).

The spelling of 123011568 in words is "one hundred twenty-three million, eleven thousand, five hundred sixty-eight".