13155431034313 has 4 divisors (see below), whose sum is σ = 13156689576388. Its totient is φ = 13154172492240.

The previous prime is 13155431034293. The next prime is 13155431034331. The reversal of 13155431034313 is 31343013455131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12154064567824 + 1001366466489 = 3486268^2 + 1000683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13155431034313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13155431034353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629255358 + ... + 629276263.

It is an arithmetic number, because the mean of its divisors is an integer number (3289172394097).

Almost surely, 2^{13155431034313} is an apocalyptic number.

It is an amenable number.

13155431034313 is a deficient number, since it is larger than the sum of its proper divisors (1258542075).

13155431034313 is a wasteful number, since it uses less digits than its factorization.

13155431034313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258542074.

The product of its (nonzero) digits is 97200, while the sum is 37.

Adding to 13155431034313 its reverse (31343013455131), we get a palindrome (44498444489444).

The spelling of 13155431034313 in words is "thirteen trillion, one hundred fifty-five billion, four hundred thirty-one million, thirty-four thousand, three hundred thirteen".