31345232143052 has 24 divisors (see below), whose sum is σ = 55012877514000. Its totient is φ = 15627269664576.

The previous prime is 31345232143051. The next prime is 31345232143117. The reversal of 31345232143052 is 25034123254313.

It is a junction number, because it is equal to n+sod(n) for n = 31345232142997 and 31345232143015.

It is not an unprimeable number, because it can be changed into a prime (31345232143051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52546199 + ... + 53139377.

It is an arithmetic number, because the mean of its divisors is an integer number (2292203229750).

Almost surely, 2^{31345232143052} is an apocalyptic number.

It is an amenable number.

31345232143052 is a deficient number, since it is larger than the sum of its proper divisors (23667645370948).

31345232143052 is a wasteful number, since it uses less digits than its factorization.

31345232143052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631385 (or 631383 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 31345232143052 its reverse (25034123254313), we get a palindrome (56379355397365).

The spelling of 31345232143052 in words is "thirty-one trillion, three hundred forty-five billion, two hundred thirty-two million, one hundred forty-three thousand, fifty-two".