210131001020 has 24 divisors (see below), whose sum is σ = 441570727584. Its totient is φ = 83996090816.

The previous prime is 210131001001. The next prime is 210131001037. The reversal of 210131001020 is 20100131012.

210131001020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 210131000992 and 210131001010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3488744 + ... + 3548463.

It is an arithmetic number, because the mean of its divisors is an integer number (18398780316).

Almost surely, 2^210131001020 is an apocalyptic number.

210131001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210131001020 is an abundant number, since it is smaller than the sum of its proper divisors (231439726564).

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

210131001020 is a wasteful number, since it uses less digits than its factorization.

210131001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7038709 (or 7038707 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 210131001020 its reverse (20100131012), we get a palindrome (230231132032).

The spelling of 210131001020 in words is "two hundred ten billion, one hundred thirty-one million, one thousand, twenty".