240305013 has 24 divisors (see below), whose sum is σ = 395799768. Its totient is φ = 139180032.

The previous prime is 240305011. The next prime is 240305017. The reversal of 240305013 is 310503042.

It can be written as a sum of positive squares in 4 ways, for example, as 51022449 + 189282564 = 7143^2 + 13758^2 .

It is not a de Polignac number, because 240305013 - 2¹ = 240305011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240305011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58420 + ... + 62397.

It is an arithmetic number, because the mean of its divisors is an integer number (16491657).

Almost surely, 2^240305013 is an apocalyptic number.

It is an amenable number.

240305013 is a deficient number, since it is larger than the sum of its proper divisors (155494755).

240305013 is a wasteful number, since it uses less digits than its factorization.

240305013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120853 (or 120850 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 240305013 is about 15501.7745113261. The cubic root of 240305013 is about 621.7096526070.

Adding to 240305013 its reverse (310503042), we get a palindrome (550808055).

The spelling of 240305013 in words is "two hundred forty million, three hundred five thousand, thirteen".