203131300213 has 4 divisors (see below), whose sum is σ = 203132540128. Its totient is φ = 203130060300.

The previous prime is 203131300201. The next prime is 203131300241. The reversal of 203131300213 is 312003131302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 203131300213 - 2⁵ = 203131300181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203131300283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328563 + ... + 717088.

It is an arithmetic number, because the mean of its divisors is an integer number (50783135032).

Almost surely, 2^203131300213 is an apocalyptic number.

It is an amenable number.

203131300213 is a deficient number, since it is larger than the sum of its proper divisors (1239915).

203131300213 is a wasteful number, since it uses less digits than its factorization.

203131300213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239914.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 203131300213 its reverse (312003131302), we get a palindrome (515134431515).

The spelling of 203131300213 in words is "two hundred three billion, one hundred thirty-one million, three hundred thousand, two hundred thirteen".