213112021131313 has 4 divisors (see below), whose sum is σ = 214227790875648. Its totient is φ = 211996251386980.

The previous prime is 213112021131259. The next prime is 213112021131329. The reversal of 213112021131313 is 313131120211312.

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 213112021131313 - 2¹³ = 213112021123121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213112021131413) 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, 557884871881 + ... + 557884872262.

It is an arithmetic number, because the mean of its divisors is an integer number (53556947718912).

Almost surely, 2^{213112021131313} is an apocalyptic number.

It is an amenable number.

213112021131313 is a deficient number, since it is larger than the sum of its proper divisors (1115769744335).

213112021131313 is a wasteful number, since it uses less digits than its factorization.

213112021131313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115769744334.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 213112021131313 its reverse (313131120211312), we get a palindrome (526243141342625).

The spelling of 213112021131313 in words is "two hundred thirteen trillion, one hundred twelve billion, twenty-one million, one hundred thirty-one thousand, three hundred thirteen".