20810310901 has 2 divisors, whose sum is σ = 20810310902. Its totient is φ = 20810310900.

The previous prime is 20810310893. The next prime is 20810310949. The reversal of 20810310901 is 10901301802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14634708676 + 6175602225 = 120974^2 + 78585^2 .

It is a cyclic number.

It is not a de Polignac number, because 20810310901 - 2³ = 20810310893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20810310971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10405155450 + 10405155451.

It is an arithmetic number, because the mean of its divisors is an integer number (10405155451).

Almost surely, 2^20810310901 is an apocalyptic number.

It is an amenable number.

20810310901 is a deficient number, since it is larger than the sum of its proper divisors (1).

20810310901 is an equidigital number, since it uses as much as digits as its factorization.

20810310901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

Subtracting from 20810310901 its reverse (10901301802), we obtain a palindrome (9909009099).

The spelling of 20810310901 in words is "twenty billion, eight hundred ten million, three hundred ten thousand, nine hundred one".