123883815 has 32 divisors (see below), whose sum is σ = 217728000. Its totient is φ = 59649920.

The previous prime is 123883813. The next prime is 123883829. The reversal of 123883815 is 518388321.

It is not a de Polignac number, because 123883815 - 2¹ = 123883813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123883813) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 22066 + ... + 27104.

It is an arithmetic number, because the mean of its divisors is an integer number (6804000).

Almost surely, 2^123883815 is an apocalyptic number.

123883815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123883815 is a deficient number, since it is larger than the sum of its proper divisors (93844185).

123883815 is a wasteful number, since it uses less digits than its factorization.

123883815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5207.

The product of its digits is 46080, while the sum is 39.

The square root of 123883815 is about 11130.3106425652. The cubic root of 123883815 is about 498.5073014701.

The spelling of 123883815 in words is "one hundred twenty-three million, eight hundred eighty-three thousand, eight hundred fifteen".