123112315 has 16 divisors (see below), whose sum is σ = 153216000. Its totient is φ = 94865760.

The previous prime is 123112313. The next prime is 123112321. The reversal of 123112315 is 513211321.

It is not a de Polignac number, because 123112315 - 2¹ = 123112313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123112292 and 123112301.

It is not an unprimeable number, because it can be changed into a prime (123112313) 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 15 ways as a sum of consecutive naturals, for example, 33436 + ... + 36934.

It is an arithmetic number, because the mean of its divisors is an integer number (9576000).

Almost surely, 2^123112315 is an apocalyptic number.

123112315 is a deficient number, since it is larger than the sum of its proper divisors (30103685).

123112315 is a wasteful number, since it uses less digits than its factorization.

123112315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762.

The product of its digits is 180, while the sum is 19.

The square root of 123112315 is about 11095.5989022675. The cubic root of 123112315 is about 497.4703095839.

Adding to 123112315 its reverse (513211321), we get a palindrome (636323636).

The spelling of 123112315 in words is "one hundred twenty-three million, one hundred twelve thousand, three hundred fifteen".