31347387543 has 16 divisors (see below), whose sum is σ = 42331533056. Its totient is φ = 20632449600.

The previous prime is 31347387509. The next prime is 31347387553. The reversal of 31347387543 is 34578374313.

It is not a de Polignac number, because 31347387543 - 2⁶ = 31347387479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31347387492 and 31347387501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31347387553) 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 15 ways as a sum of consecutive naturals, for example, 138430 + ... + 286107.

It is an arithmetic number, because the mean of its divisors is an integer number (2645720816).

Almost surely, 2^31347387543 is an apocalyptic number.

31347387543 is a deficient number, since it is larger than the sum of its proper divisors (10984145513).

31347387543 is a wasteful number, since it uses less digits than its factorization.

31347387543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424854.

The product of its digits is 2540160, while the sum is 48.

The spelling of 31347387543 in words is "thirty-one billion, three hundred forty-seven million, three hundred eighty-seven thousand, five hundred forty-three".