20345315244031 has 2 divisors, whose sum is σ = 20345315244032. Its totient is φ = 20345315244030.

The previous prime is 20345315243989. The next prime is 20345315244053. The reversal of 20345315244031 is 13044251354302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20345315244031 is a prime.

It is a super-2 number, since 2×20345315244031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20345315244071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172657622015 + 10172657622016.

It is an arithmetic number, because the mean of its divisors is an integer number (10172657622016).

Almost surely, 2^{20345315244031} is an apocalyptic number.

20345315244031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20345315244031 is an equidigital number, since it uses as much as digits as its factorization.

20345315244031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 20345315244031 its reverse (13044251354302), we get a palindrome (33389566598333).

The spelling of 20345315244031 in words is "twenty trillion, three hundred forty-five billion, three hundred fifteen million, two hundred forty-four thousand, thirty-one".