31347750043 has 2 divisors, whose sum is σ = 31347750044. Its totient is φ = 31347750042.

The previous prime is 31347750041. The next prime is 31347750073. The reversal of 31347750043 is 34005774313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31347750043 - 2¹ = 31347750041 is a prime.

Together with 31347750041, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 31347749984 and 31347750011.

It is not a weakly prime, because it can be changed into another prime (31347750041) 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 as a sum of consecutive naturals, namely, 15673875021 + 15673875022.

It is an arithmetic number, because the mean of its divisors is an integer number (15673875022).

Almost surely, 2^31347750043 is an apocalyptic number.

31347750043 is a deficient number, since it is larger than the sum of its proper divisors (1).

31347750043 is an equidigital number, since it uses as much as digits as its factorization.

31347750043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 37.

The spelling of 31347750043 in words is "thirty-one billion, three hundred forty-seven million, seven hundred fifty thousand, forty-three".