20312608349123 has 2 divisors, whose sum is σ = 20312608349124. Its totient is φ = 20312608349122.

The previous prime is 20312608349087. The next prime is 20312608349141. The reversal of 20312608349123 is 32194380621302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20312608349123 - 2⁸ = 20312608348867 is a prime.

It is a super-2 number, since 2×20312608349123² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20312608349153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156304174561 + 10156304174562.

It is an arithmetic number, because the mean of its divisors is an integer number (10156304174562).

Almost surely, 2^{20312608349123} is an apocalyptic number.

20312608349123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312608349123 is an equidigital number, since it uses as much as digits as its factorization.

20312608349123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 20312608349123 in words is "twenty trillion, three hundred twelve billion, six hundred eight million, three hundred forty-nine thousand, one hundred twenty-three".