123538315 has 4 divisors (see below), whose sum is σ = 148245984. Its totient is φ = 98830648.

The previous prime is 123538307. The next prime is 123538321. The reversal of 123538315 is 513835321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123538315 - 2³ = 123538307 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12353827 + ... + 12353836.

It is an arithmetic number, because the mean of its divisors is an integer number (37061496).

Almost surely, 2^123538315 is an apocalyptic number.

123538315 is a deficient number, since it is larger than the sum of its proper divisors (24707669).

123538315 is an equidigital number, since it uses as much as digits as its factorization.

123538315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24707668.

The product of its digits is 10800, while the sum is 31.

The square root of 123538315 is about 11114.7791251109. The cubic root of 123538315 is about 498.0434404024.

The spelling of 123538315 in words is "one hundred twenty-three million, five hundred thirty-eight thousand, three hundred fifteen".