201231032020 has 48 divisors (see below), whose sum is σ = 427437698688. Its totient is φ = 79570869120.

The previous prime is 201231031933. The next prime is 201231032021. The reversal of 201231032020 is 20230132102.

It is a junction number, because it is equal to n+sod(n) for n = 201231031985 and 201231032003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201231032021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1090722 + ... + 1261798.

It is an arithmetic number, because the mean of its divisors is an integer number (8904952056).

Almost surely, 2^201231032020 is an apocalyptic number.

201231032020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201231032020 is an abundant number, since it is smaller than the sum of its proper divisors (226206666668).

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

201231032020 is a wasteful number, since it uses less digits than its factorization.

201231032020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171760 (or 171758 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 201231032020 its reverse (20230132102), we get a palindrome (221461164122).

The spelling of 201231032020 in words is "two hundred one billion, two hundred thirty-one million, thirty-two thousand, twenty".