201031201020 has 96 divisors (see below), whose sum is σ = 627089440320. Its totient is φ = 47778232320.

The previous prime is 201031200967. The next prime is 201031201067. The reversal of 201031201020 is 20102130102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 201031200987 and 201031201005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4421041 + ... + 4466280.

It is an arithmetic number, because the mean of its divisors is an integer number (6532181670).

Almost surely, 2^201031201020 is an apocalyptic number.

201031201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201031201020 is an abundant number, since it is smaller than the sum of its proper divisors (426058239300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201031201020 is a wasteful number, since it uses less digits than its factorization.

201031201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8887375 (or 8887373 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 201031201020 its reverse (20102130102), we get a palindrome (221133331122).

The spelling of 201031201020 in words is "two hundred one billion, thirty-one million, two hundred one thousand, twenty".