31343013455131 has 12 divisors (see below), whose sum is σ = 36460333789320. Its totient is φ = 26865371100960.

The previous prime is 31343013455129. The next prime is 31343013455137. The reversal of 31343013455131 is 13155431034313.

It is not a de Polignac number, because 31343013455131 - 2¹ = 31343013455129 is a prime.

It is a super-2 number, since 2×31343013455131² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31343013455137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30559600 + ... + 31568578.

It is an arithmetic number, because the mean of its divisors is an integer number (3038361149110).

Almost surely, 2^{31343013455131} is an apocalyptic number.

31343013455131 is a deficient number, since it is larger than the sum of its proper divisors (5117320334189).

31343013455131 is a wasteful number, since it uses less digits than its factorization.

31343013455131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642954 (or 1642947 counting only the distinct ones).

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

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

The spelling of 31343013455131 in words is "thirty-one trillion, three hundred forty-three billion, thirteen million, four hundred fifty-five thousand, one hundred thirty-one".