20630131431373 has 2 divisors, whose sum is σ = 20630131431374. Its totient is φ = 20630131431372.

The previous prime is 20630131431347. The next prime is 20630131431397. The reversal of 20630131431373 is 37313413103602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15394738973769 + 5235392457604 = 3923613^2 + 2288098^2 .

It is a cyclic number.

It is not a de Polignac number, because 20630131431373 - 2³³ = 20621541496781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20630131435373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10315065715686 + 10315065715687.

It is an arithmetic number, because the mean of its divisors is an integer number (10315065715687).

Almost surely, 2^{20630131431373} is an apocalyptic number.

It is an amenable number.

20630131431373 is a deficient number, since it is larger than the sum of its proper divisors (1).

20630131431373 is an equidigital number, since it uses as much as digits as its factorization.

20630131431373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 37.

Adding to 20630131431373 its reverse (37313413103602), we get a palindrome (57943544534975).

The spelling of 20630131431373 in words is "twenty trillion, six hundred thirty billion, one hundred thirty-one million, four hundred thirty-one thousand, three hundred seventy-three".