20201231003 has 4 divisors (see below), whose sum is σ = 20852883648. Its totient is φ = 19549578360.

The previous prime is 20201230921. The next prime is 20201231009. The reversal of 20201231003 is 30013210202.

It is a happy number.

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

It is not a de Polignac number, because 20201231003 - 2²⁰ = 20200182427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20201231009) 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, 325826276 + ... + 325826337.

It is an arithmetic number, because the mean of its divisors is an integer number (5213220912).

Almost surely, 2^20201231003 is an apocalyptic number.

20201231003 is a deficient number, since it is larger than the sum of its proper divisors (651652645).

20201231003 is an equidigital number, since it uses as much as digits as its factorization.

20201231003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651652644.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20201231003 its reverse (30013210202), we get a palindrome (50214441205).

The spelling of 20201231003 in words is "twenty billion, two hundred one million, two hundred thirty-one thousand, three".