123919213 has 8 divisors (see below), whose sum is σ = 138061440. Its totient is φ = 110256480.

The previous prime is 123919199. The next prime is 123919219. The reversal of 123919213 is 312919321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123919213 - 2⁵ = 123919181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123919219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119328 + ... + 120361.

It is an arithmetic number, because the mean of its divisors is an integer number (17257680).

Almost surely, 2^123919213 is an apocalyptic number.

It is an amenable number.

123919213 is a deficient number, since it is larger than the sum of its proper divisors (14142227).

123919213 is a wasteful number, since it uses less digits than its factorization.

123919213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239747.

The product of its digits is 2916, while the sum is 31.

The square root of 123919213 is about 11131.9006912566. The cubic root of 123919213 is about 498.5547773545.

The spelling of 123919213 in words is "one hundred twenty-three million, nine hundred nineteen thousand, two hundred thirteen".