20312873135101 has 2 divisors, whose sum is σ = 20312873135102. Its totient is φ = 20312873135100.

The previous prime is 20312873135077. The next prime is 20312873135129. The reversal of 20312873135101 is 10153137821302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18232857300025 + 2080015835076 = 4269995^2 + 1442226^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20312873135101 is a prime.

It is a super-2 number, since 2×20312873135101² (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 (20312873133101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156436567550 + 10156436567551.

It is an arithmetic number, because the mean of its divisors is an integer number (10156436567551).

Almost surely, 2^{20312873135101} is an apocalyptic number.

It is an amenable number.

20312873135101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312873135101 is an equidigital number, since it uses as much as digits as its factorization.

20312873135101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 20312873135101 in words is "twenty trillion, three hundred twelve billion, eight hundred seventy-three million, one hundred thirty-five thousand, one hundred one".