13315320502031 has 4 divisors (see below), whose sum is σ = 13315524187392. Its totient is φ = 13315116816672.

The previous prime is 13315320502019. The next prime is 13315320502069. The reversal of 13315320502031 is 13020502351331.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13315320502031 - 2¹⁴ = 13315320485647 is a prime.

It is a super-2 number, since 2×13315320502031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13315320501985 and 13315320502003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13315320502531) 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, 101744591 + ... + 101875376.

It is an arithmetic number, because the mean of its divisors is an integer number (3328881046848).

Almost surely, 2^{13315320502031} is an apocalyptic number.

13315320502031 is a deficient number, since it is larger than the sum of its proper divisors (203685361).

13315320502031 is an equidigital number, since it uses as much as digits as its factorization.

13315320502031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203685360.

The product of its (nonzero) digits is 8100, while the sum is 29.

Adding to 13315320502031 its reverse (13020502351331), we get a palindrome (26335822853362).

The spelling of 13315320502031 in words is "thirteen trillion, three hundred fifteen billion, three hundred twenty million, five hundred two thousand, thirty-one".