123643315 has 8 divisors (see below), whose sum is σ = 149759280. Its totient is φ = 97989792.

The previous prime is 123643301. The next prime is 123643319. The reversal of 123643315 is 513346321.

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 123643315 - 2¹⁷ = 123512243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123643319) 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, 115020 + ... + 116089.

It is an arithmetic number, because the mean of its divisors is an integer number (18719910).

Almost surely, 2^123643315 is an apocalyptic number.

123643315 is a deficient number, since it is larger than the sum of its proper divisors (26115965).

123643315 is a wasteful number, since it uses less digits than its factorization.

123643315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231221.

The product of its digits is 6480, while the sum is 28.

The square root of 123643315 is about 11119.5015625701. The cubic root of 123643315 is about 498.1845025835.

Adding to 123643315 its reverse (513346321), we get a palindrome (636989636).

It can be divided in two parts, 1236 and 43315, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 123643315 in words is "one hundred twenty-three million, six hundred forty-three thousand, three hundred fifteen".