248815123 has 4 divisors (see below), whose sum is σ = 249032448. Its totient is φ = 248597800.

The previous prime is 248815117. The next prime is 248815139. The reversal of 248815123 is 321518842.

It is a happy number.

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 248815123 - 2¹³ = 248806931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248815163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106936 + ... + 109237.

It is an arithmetic number, because the mean of its divisors is an integer number (62258112).

Almost surely, 2^248815123 is an apocalyptic number.

248815123 is a deficient number, since it is larger than the sum of its proper divisors (217325).

248815123 is a wasteful number, since it uses less digits than its factorization.

248815123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217324.

The product of its digits is 15360, while the sum is 34.

The square root of 248815123 is about 15773.8746983739. The cubic root of 248815123 is about 628.9637141714.

The spelling of 248815123 in words is "two hundred forty-eight million, eight hundred fifteen thousand, one hundred twenty-three".