124318813 has 4 divisors (see below), whose sum is σ = 124407360. Its totient is φ = 124230268.

The previous prime is 124318769. The next prime is 124318819. The reversal of 124318813 is 318813421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 124318813 - 2⁹ = 124318301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124318819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42133 + ... + 44986.

It is an arithmetic number, because the mean of its divisors is an integer number (31101840).

Almost surely, 2^124318813 is an apocalyptic number.

It is an amenable number.

124318813 is a deficient number, since it is larger than the sum of its proper divisors (88547).

124318813 is an equidigital number, since it uses as much as digits as its factorization.

124318813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88546.

The product of its digits is 4608, while the sum is 31.

The square root of 124318813 is about 11149.8346624513. The cubic root of 124318813 is about 499.0900958199.

Adding to 124318813 its product of digits (4608), we get a palindrome (124323421).

The spelling of 124318813 in words is "one hundred twenty-four million, three hundred eighteen thousand, eight hundred thirteen".