31100002064473 has 2 divisors, whose sum is σ = 31100002064474. Its totient is φ = 31100002064472.

The previous prime is 31100002064471. The next prime is 31100002064563. The reversal of 31100002064473 is 37446020000113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25829244733504 + 5270757330969 = 5082248^2 + 2295813^2 .

It is an emirp because it is prime and its reverse (37446020000113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31100002064473 - 2¹ = 31100002064471 is a prime.

Together with 31100002064471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31100002064471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15550001032236 + 15550001032237.

It is an arithmetic number, because the mean of its divisors is an integer number (15550001032237).

Almost surely, 2^{31100002064473} is an apocalyptic number.

It is an amenable number.

31100002064473 is a deficient number, since it is larger than the sum of its proper divisors (1).

31100002064473 is an equidigital number, since it uses as much as digits as its factorization.

31100002064473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

Adding to 31100002064473 its reverse (37446020000113), we get a palindrome (68546022064586).

The spelling of 31100002064473 in words is "thirty-one trillion, one hundred billion, two million, sixty-four thousand, four hundred seventy-three".