20203131204 has 36 divisors (see below), whose sum is σ = 51111237996. Its totient is φ = 6728810688.

The previous prime is 20203131199. The next prime is 20203131217. The reversal of 20203131204 is 40213130202.

It can be written as a sum of positive squares in 2 ways, for example, as 645668100 + 19557463104 = 25410^2 + 139848^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187659 + ... + 274994.

It is an arithmetic number, because the mean of its divisors is an integer number (1419756611).

Almost surely, 2^20203131204 is an apocalyptic number.

It is an amenable number.

20203131204 is an abundant number, since it is smaller than the sum of its proper divisors (30908106792).

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

20203131204 is a wasteful number, since it uses less digits than its factorization.

20203131204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463876 (or 463871 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20203131204 its reverse (40213130202), we get a palindrome (60416261406).

The spelling of 20203131204 in words is "twenty billion, two hundred three million, one hundred thirty-one thousand, two hundred four".