213031230013 has 4 divisors (see below), whose sum is σ = 243464262880. Its totient is φ = 182598197148.

The previous prime is 213031230001. The next prime is 213031230023. The reversal of 213031230013 is 310032130312.

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 213031230013 - 2⁹ = 213031229501 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 (213031230023) 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, 15216516423 + ... + 15216516436.

It is an arithmetic number, because the mean of its divisors is an integer number (60866065720).

Almost surely, 2^213031230013 is an apocalyptic number.

It is an amenable number.

213031230013 is a deficient number, since it is larger than the sum of its proper divisors (30433032867).

213031230013 is an equidigital number, since it uses as much as digits as its factorization.

213031230013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30433032866.

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

Adding to 213031230013 its reverse (310032130312), we get a palindrome (523063360325).

The spelling of 213031230013 in words is "two hundred thirteen billion, thirty-one million, two hundred thirty thousand, thirteen".