248718321 has 12 divisors (see below), whose sum is σ = 367615248. Its totient is φ = 161955864.

The previous prime is 248718319. The next prime is 248718361. The reversal of 248718321 is 123817842.

It is not a de Polignac number, because 248718321 - 2¹ = 248718319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (248718361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320955 + ... + 321728.

It is an arithmetic number, because the mean of its divisors is an integer number (30634604).

Almost surely, 2^248718321 is an apocalyptic number.

It is an amenable number.

248718321 is a deficient number, since it is larger than the sum of its proper divisors (118896927).

248718321 is a wasteful number, since it uses less digits than its factorization.

248718321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642732 (or 642729 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 248718321 is about 15770.8059717948. The cubic root of 248718321 is about 628.8821370789.

The spelling of 248718321 in words is "two hundred forty-eight million, seven hundred eighteen thousand, three hundred twenty-one".