20201303231999 has 4 divisors (see below), whose sum is σ = 20428284167280. Its totient is φ = 19974322296720.

The previous prime is 20201303231971. The next prime is 20201303232031. The reversal of 20201303231999 is 99913230310202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20201303231999 - 2¹⁶ = 20201303166463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201303231899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113490467507 + ... + 113490467684.

It is an arithmetic number, because the mean of its divisors is an integer number (5107071041820).

Almost surely, 2^{20201303231999} is an apocalyptic number.

20201303231999 is a deficient number, since it is larger than the sum of its proper divisors (226980935281).

20201303231999 is an equidigital number, since it uses as much as digits as its factorization.

20201303231999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226980935280.

The product of its (nonzero) digits is 157464, while the sum is 44.

The spelling of 20201303231999 in words is "twenty trillion, two hundred one billion, three hundred three million, two hundred thirty-one thousand, nine hundred ninety-nine".