248421313 has 4 divisors (see below), whose sum is σ = 283910080. Its totient is φ = 212932548.

The previous prime is 248421311. The next prime is 248421319. The reversal of 248421313 is 313124842.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313124842 = 2 ⋅156562421.

It is a cyclic number.

It is not a de Polignac number, because 248421313 - 2¹ = 248421311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248421311) 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, 17744373 + ... + 17744386.

It is an arithmetic number, because the mean of its divisors is an integer number (70977520).

Almost surely, 2^248421313 is an apocalyptic number.

It is an amenable number.

248421313 is a deficient number, since it is larger than the sum of its proper divisors (35488767).

248421313 is an equidigital number, since it uses as much as digits as its factorization.

248421313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35488766.

The product of its digits is 4608, while the sum is 28.

The square root of 248421313 is about 15761.3867727431. The cubic root of 248421313 is about 628.6317099777.

The spelling of 248421313 in words is "two hundred forty-eight million, four hundred twenty-one thousand, three hundred thirteen".