20010231312203 has 4 divisors (see below), whose sum is σ = 21829343249688. Its totient is φ = 18191119374720.

The previous prime is 20010231312191. The next prime is 20010231312257. The reversal of 20010231312203 is 30221313201002.

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 20010231312203 - 2⁴ = 20010231312187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010231312263) 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, 909555968726 + ... + 909555968747.

It is an arithmetic number, because the mean of its divisors is an integer number (5457335812422).

Almost surely, 2^{20010231312203} is an apocalyptic number.

20010231312203 is a deficient number, since it is larger than the sum of its proper divisors (1819111937485).

20010231312203 is a wasteful number, since it uses less digits than its factorization.

20010231312203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819111937484.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20010231312203 its reverse (30221313201002), we get a palindrome (50231544513205).

The spelling of 20010231312203 in words is "twenty trillion, ten billion, two hundred thirty-one million, three hundred twelve thousand, two hundred three".