213031203231013 has 4 divisors (see below), whose sum is σ = 213031232436960. Its totient is φ = 213031174025068.

The previous prime is 213031203230983. The next prime is 213031203231031. The reversal of 213031203231013 is 310132302130312.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213031203231013 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 (213031203231043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6604968 + ... + 21672286.

It is an arithmetic number, because the mean of its divisors is an integer number (53257808109240).

Almost surely, 2^{213031203231013} is an apocalyptic number.

It is an amenable number.

213031203231013 is a deficient number, since it is larger than the sum of its proper divisors (29205947).

213031203231013 is a wasteful number, since it uses less digits than its factorization.

213031203231013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29205946.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 213031203231013 its reverse (310132302130312), we get a palindrome (523163505361325).

The spelling of 213031203231013 in words is "two hundred thirteen trillion, thirty-one billion, two hundred three million, two hundred thirty-one thousand, thirteen".