31959078673 has 2 divisors, whose sum is σ = 31959078674. Its totient is φ = 31959078672.

The previous prime is 31959078653. The next prime is 31959078731. The reversal of 31959078673 is 37687095913.

It is a happy number.

It is an a-pointer prime, because the next prime (31959078731) can be obtained adding 31959078673 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31227484369 + 731594304 = 176713^2 + 27048^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31959078673 is a prime.

It is not a weakly prime, because it can be changed into another prime (31959078623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15979539336 + 15979539337.

It is an arithmetic number, because the mean of its divisors is an integer number (15979539337).

Almost surely, 2^31959078673 is an apocalyptic number.

It is an amenable number.

31959078673 is a deficient number, since it is larger than the sum of its proper divisors (1).

31959078673 is an equidigital number, since it uses as much as digits as its factorization.

31959078673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8573040, while the sum is 58.

The spelling of 31959078673 in words is "thirty-one billion, nine hundred fifty-nine million, seventy-eight thousand, six hundred seventy-three".