20131213440315 has 16 divisors (see below), whose sum is σ = 32817676251168. Its totient is φ = 10534068919296.

The previous prime is 20131213440311. The next prime is 20131213440341. The reversal of 20131213440315 is 51304431213102.

It is not a de Polignac number, because 20131213440315 - 2² = 20131213440311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20131213440311) 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, 12661139734 + ... + 12661141323.

It is an arithmetic number, because the mean of its divisors is an integer number (2051104765698).

Almost surely, 2^{20131213440315} is an apocalyptic number.

20131213440315 is a deficient number, since it is larger than the sum of its proper divisors (12686462810853).

20131213440315 is a wasteful number, since it uses less digits than its factorization.

20131213440315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25322281118.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 20131213440315 its reverse (51304431213102), we get a palindrome (71435644653417).

The spelling of 20131213440315 in words is "twenty trillion, one hundred thirty-one billion, two hundred thirteen million, four hundred forty thousand, three hundred fifteen".