248303681 has 4 divisors (see below), whose sum is σ = 251093700. Its totient is φ = 245513664.

The previous prime is 248303641. The next prime is 248303689. The reversal of 248303681 is 186303842.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 186303842 = 2 ⋅93151921.

It can be written as a sum of positive squares in 2 ways, for example, as 62663056 + 185640625 = 7916^2 + 13625^2 .

It is a cyclic number.

It is not a de Polignac number, because 248303681 - 2⁶ = 248303617 is a prime.

It is a super-2 number, since 2×248303681² = 123309435996299522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248303689) 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, 1394876 + ... + 1395053.

It is an arithmetic number, because the mean of its divisors is an integer number (62773425).

Almost surely, 2^248303681 is an apocalyptic number.

It is an amenable number.

248303681 is a deficient number, since it is larger than the sum of its proper divisors (2790019).

248303681 is an equidigital number, since it uses as much as digits as its factorization.

248303681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790018.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 248303681 is about 15757.6546795518. The cubic root of 248303681 is about 628.5324714714.

The spelling of 248303681 in words is "two hundred forty-eight million, three hundred three thousand, six hundred eighty-one".