20203231213 has 12 divisors (see below), whose sum is σ = 22240643040. Its totient is φ = 18338631080.

The previous prime is 20203231177. The next prime is 20203231229. The reversal of 20203231213 is 31213230202.

It is not a de Polignac number, because 20203231213 - 2¹³ = 20203223021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203231253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46945 + ... + 206422.

It is an arithmetic number, because the mean of its divisors is an integer number (1853386920).

Almost surely, 2^20203231213 is an apocalyptic number.

It is an amenable number.

20203231213 is a deficient number, since it is larger than the sum of its proper divisors (2037411827).

20203231213 is a wasteful number, since it uses less digits than its factorization.

20203231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254048 (or 254037 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20203231213 its reverse (31213230202), we get a palindrome (51416461415).

The spelling of 20203231213 in words is "twenty billion, two hundred three million, two hundred thirty-one thousand, two hundred thirteen".