31999495343 has 2 divisors, whose sum is σ = 31999495344. Its totient is φ = 31999495342.

The previous prime is 31999495331. The next prime is 31999495357. The reversal of 31999495343 is 34359499913.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31999495343 - 2⁴ = 31999495327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31999495393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15999747671 + 15999747672.

It is an arithmetic number, because the mean of its divisors is an integer number (15999747672).

Almost surely, 2^31999495343 is an apocalyptic number.

31999495343 is a deficient number, since it is larger than the sum of its proper divisors (1).

31999495343 is an equidigital number, since it uses as much as digits as its factorization.

31999495343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14171760, while the sum is 59.

The spelling of 31999495343 in words is "thirty-one billion, nine hundred ninety-nine million, four hundred ninety-five thousand, three hundred forty-three".