31028873738573 has 2 divisors, whose sum is σ = 31028873738574. Its totient is φ = 31028873738572.

The previous prime is 31028873738543. The next prime is 31028873738627. The reversal of 31028873738573 is 37583737882013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19907329068169 + 11121544670404 = 4461763^2 + 3334898^2 .

It is an emirp because it is prime and its reverse (37583737882013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31028873738573 - 2¹² = 31028873734477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31028873738543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15514436869286 + 15514436869287.

It is an arithmetic number, because the mean of its divisors is an integer number (15514436869287).

Almost surely, 2^{31028873738573} is an apocalyptic number.

It is an amenable number.

31028873738573 is a deficient number, since it is larger than the sum of its proper divisors (1).

31028873738573 is an equidigital number, since it uses as much as digits as its factorization.

31028873738573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142248960, while the sum is 65.

The spelling of 31028873738573 in words is "thirty-one trillion, twenty-eight billion, eight hundred seventy-three million, seven hundred thirty-eight thousand, five hundred seventy-three".