123811808 has 24 divisors (see below), whose sum is σ = 244045872. Its totient is φ = 61831936.

The previous prime is 123811789. The next prime is 123811819. The reversal of 123811808 is 808118321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33341 + ... + 36867.

It is an arithmetic number, because the mean of its divisors is an integer number (10168578).

Almost surely, 2^123811808 is an apocalyptic number.

It is an amenable number.

123811808 is a deficient number, since it is larger than the sum of its proper divisors (120234064).

123811808 is a wasteful number, since it uses less digits than its factorization.

123811808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4634 (or 4626 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 123811808 is about 11127.0754468548. The cubic root of 123811808 is about 498.4106975882.

The spelling of 123811808 in words is "one hundred twenty-three million, eight hundred eleven thousand, eight hundred eight".