202102310003173 has 2 divisors, whose sum is σ = 202102310003174. Its totient is φ = 202102310003172.

The previous prime is 202102310003093. The next prime is 202102310003179. The reversal of 202102310003173 is 371300013201202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182319180563844 + 19783129439329 = 13502562^2 + 4447823^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202102310003173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202102310003179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101051155001586 + 101051155001587.

It is an arithmetic number, because the mean of its divisors is an integer number (101051155001587).

Almost surely, 2^{202102310003173} is an apocalyptic number.

It is an amenable number.

202102310003173 is a deficient number, since it is larger than the sum of its proper divisors (1).

202102310003173 is an equidigital number, since it uses as much as digits as its factorization.

202102310003173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 202102310003173 its reverse (371300013201202), we get a palindrome (573402323204375).

The spelling of 202102310003173 in words is "two hundred two trillion, one hundred two billion, three hundred ten million, three thousand, one hundred seventy-three".