20203131210 has 32 divisors (see below), whose sum is σ = 50051630592. Its totient is φ = 5213711040.

The previous prime is 20203131199. The next prime is 20203131217. The reversal of 20203131210 is 1213130202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20203131210.

It is not an unprimeable number, because it can be changed into a prime (20203131217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10860969 + ... + 10862828.

It is an arithmetic number, because the mean of its divisors is an integer number (1564113456).

Almost surely, 2^20203131210 is an apocalyptic number.

20203131210 is an abundant number, since it is smaller than the sum of its proper divisors (29848499382).

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

20203131210 is a wasteful number, since it uses less digits than its factorization.

20203131210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21723838.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20203131210 its reverse (1213130202), we get a palindrome (21416261412).

The spelling of 20203131210 in words is "twenty billion, two hundred three million, one hundred thirty-one thousand, two hundred ten".