20312115001 has 2 divisors, whose sum is σ = 20312115002. Its totient is φ = 20312115000.

The previous prime is 20312114993. The next prime is 20312115119. The reversal of 20312115001 is 10051121302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18994352400 + 1317762601 = 137820^2 + 36301^2 .

It is a cyclic number.

It is not a de Polignac number, because 20312115001 - 2³ = 20312114993 is a prime.

It is not a weakly prime, because it can be changed into another prime (20312115701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156057500 + 10156057501.

It is an arithmetic number, because the mean of its divisors is an integer number (10156057501).

Almost surely, 2^20312115001 is an apocalyptic number.

It is an amenable number.

20312115001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312115001 is an equidigital number, since it uses as much as digits as its factorization.

20312115001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 20312115001 its reverse (10051121302), we get a palindrome (30363236303).

The spelling of 20312115001 in words is "twenty billion, three hundred twelve million, one hundred fifteen thousand, one".