120813723 has 24 divisors (see below), whose sum is σ = 184766400. Its totient is φ = 75857904.

The previous prime is 120813701. The next prime is 120813731. The reversal of 120813723 is 327318021.

It is not a de Polignac number, because 120813723 - 2⁵ = 120813691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120813743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28636 + ... + 32582.

It is an arithmetic number, because the mean of its divisors is an integer number (7698600).

Almost surely, 2^120813723 is an apocalyptic number.

120813723 is a deficient number, since it is larger than the sum of its proper divisors (63952677).

120813723 is a wasteful number, since it uses less digits than its factorization.

120813723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151 (or 4148 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 120813723 is about 10991.5296023802. The cubic root of 120813723 is about 494.3548006523.

The spelling of 120813723 in words is "one hundred twenty million, eight hundred thirteen thousand, seven hundred twenty-three".