13144345335331 has 32 divisors (see below), whose sum is σ = 15582091968000. Its totient is φ = 11080376123040.

The previous prime is 13144345335287. The next prime is 13144345335367. The reversal of 13144345335331 is 13353354344131.

It is not a de Polignac number, because 13144345335331 - 2²⁹ = 13143808464419 is a prime.

It is a super-2 number, since 2×13144345335331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13144345335391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169918860 + ... + 169996198.

It is an arithmetic number, because the mean of its divisors is an integer number (486940374000).

Almost surely, 2^{13144345335331} is an apocalyptic number.

13144345335331 is a deficient number, since it is larger than the sum of its proper divisors (2437746632669).

13144345335331 is an frugal number, since it uses more digits than its factorization.

13144345335331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85544 (or 85530 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 43.

Adding to 13144345335331 its reverse (13353354344131), we get a palindrome (26497699679462).

The spelling of 13144345335331 in words is "thirteen trillion, one hundred forty-four billion, three hundred forty-five million, three hundred thirty-five thousand, three hundred thirty-one".