123230340 has 72 divisors (see below), whose sum is σ = 375036480. Its totient is φ = 32752704.

The previous prime is 123230339. The next prime is 123230407. The reversal of 123230340 is 43032321.

123230340 is a `hidden beast` number, since 1 + 2 + 323 + 0 + 340 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63667 + ... + 65573.

It is an arithmetic number, because the mean of its divisors is an integer number (5208840).

Almost surely, 2^123230340 is an apocalyptic number.

123230340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123230340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187518240).

123230340 is an abundant number, since it is smaller than the sum of its proper divisors (251806140).

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

123230340 is a wasteful number, since it uses less digits than its factorization.

123230340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281 (or 2276 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 123230340 is about 11100.9161784062. The cubic root of 123230340 is about 497.6292299993.

Adding to 123230340 its reverse (43032321), we get a palindrome (166262661).

The spelling of 123230340 in words is "one hundred twenty-three million, two hundred thirty thousand, three hundred forty".