20001310999 has 2 divisors, whose sum is σ = 20001311000. Its totient is φ = 20001310998.

The previous prime is 20001310969. The next prime is 20001311009. The reversal of 20001310999 is 99901310002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20001310999 - 2²⁷ = 19867093271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001310969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000655499 + 10000655500.

It is an arithmetic number, because the mean of its divisors is an integer number (10000655500).

Almost surely, 2^20001310999 is an apocalyptic number.

20001310999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001310999 is an equidigital number, since it uses as much as digits as its factorization.

20001310999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 34.

The spelling of 20001310999 in words is "twenty billion, one million, three hundred ten thousand, nine hundred ninety-nine".