248021013 has 16 divisors (see below), whose sum is σ = 342066816. Its totient is φ = 159740160.

The previous prime is 248021009. The next prime is 248021023. The reversal of 248021013 is 310120842.

It is not a de Polignac number, because 248021013 - 2² = 248021009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248021023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2881 + ... + 22457.

It is an arithmetic number, because the mean of its divisors is an integer number (21379176).

Almost surely, 2^248021013 is an apocalyptic number.

It is an amenable number.

248021013 is a deficient number, since it is larger than the sum of its proper divisors (94045803).

248021013 is a wasteful number, since it uses less digits than its factorization.

248021013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19724.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 248021013 is about 15748.6828973092. The cubic root of 248021013 is about 628.2938745555.

Adding to 248021013 its reverse (310120842), we get a palindrome (558141855).

The spelling of 248021013 in words is "two hundred forty-eight million, twenty-one thousand, thirteen".