20312267243203 has 12 divisors (see below), whose sum is σ = 22206111165840. Its totient is φ = 18469937554992.

The previous prime is 20312267243197. The next prime is 20312267243237. The reversal of 20312267243203 is 30234276221302.

It is a de Polignac number, because none of the positive numbers 2^k-20312267243203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20312267243263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173976183 + ... + 174092896.

It is an arithmetic number, because the mean of its divisors is an integer number (1850509263820).

Almost surely, 2^{20312267243203} is an apocalyptic number.

20312267243203 is a deficient number, since it is larger than the sum of its proper divisors (1893843922637).

20312267243203 is an equidigital number, since it uses as much as digits as its factorization.

20312267243203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348069226 (or 348069159 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 37.

The spelling of 20312267243203 in words is "twenty trillion, three hundred twelve billion, two hundred sixty-seven million, two hundred forty-three thousand, two hundred three".