123013830 has 32 divisors (see below), whose sum is σ = 295561728. Its totient is φ = 32767200.

The previous prime is 123013801. The next prime is 123013843. The reversal of 123013830 is 38310321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 123013797 and 123013806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35265 + ... + 38595.

It is an arithmetic number, because the mean of its divisors is an integer number (9236304).

Almost surely, 2^123013830 is an apocalyptic number.

123013830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123013830 is an abundant number, since it is smaller than the sum of its proper divisors (172547898).

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

123013830 is a wasteful number, since it uses less digits than its factorization.

123013830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 123013830 is about 11091.1599934362. The cubic root of 123013830 is about 497.3376219821.

The spelling of 123013830 in words is "one hundred twenty-three million, thirteen thousand, eight hundred thirty".