240331240013 has 2 divisors, whose sum is σ = 240331240014. Its totient is φ = 240331240012.

The previous prime is 240331239961. The next prime is 240331240043. The reversal of 240331240013 is 310042133042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211823619049 + 28507620964 = 460243^2 + 168842^2 .

It is a cyclic number.

It is not a de Polignac number, because 240331240013 - 2¹² = 240331235917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240331240043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120165620006 + 120165620007.

It is an arithmetic number, because the mean of its divisors is an integer number (120165620007).

Almost surely, 2^240331240013 is an apocalyptic number.

It is an amenable number.

240331240013 is a deficient number, since it is larger than the sum of its proper divisors (1).

240331240013 is an equidigital number, since it uses as much as digits as its factorization.

240331240013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 240331240013 its reverse (310042133042), we get a palindrome (550373373055).

The spelling of 240331240013 in words is "two hundred forty billion, three hundred thirty-one million, two hundred forty thousand, thirteen".