31443434459 has 2 divisors, whose sum is σ = 31443434460. Its totient is φ = 31443434458.

The previous prime is 31443434377. The next prime is 31443434471. The reversal of 31443434459 is 95443434413.

It is a strong prime.

It is an emirp because it is prime and its reverse (95443434413) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31443434459 is a prime.

It is not a weakly prime, because it can be changed into another prime (31443434059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15721717229 + 15721717230.

It is an arithmetic number, because the mean of its divisors is an integer number (15721717230).

Almost surely, 2^31443434459 is an apocalyptic number.

31443434459 is a deficient number, since it is larger than the sum of its proper divisors (1).

31443434459 is an equidigital number, since it uses as much as digits as its factorization.

31443434459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 44.

The spelling of 31443434459 in words is "thirty-one billion, four hundred forty-three million, four hundred thirty-four thousand, four hundred fifty-nine".