213513254311 has 4 divisors (see below), whose sum is σ = 244015147792. Its totient is φ = 183011360832.

The previous prime is 213513254293. The next prime is 213513254359. The reversal of 213513254311 is 113452315312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213513254311 - 2⁹ = 213513253799 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 (213513254411) 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, 15250946730 + ... + 15250946743.

It is an arithmetic number, because the mean of its divisors is an integer number (61003786948).

Almost surely, 2^213513254311 is an apocalyptic number.

213513254311 is a deficient number, since it is larger than the sum of its proper divisors (30501893481).

213513254311 is an equidigital number, since it uses as much as digits as its factorization.

213513254311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30501893480.

The product of its digits is 10800, while the sum is 31.

Adding to 213513254311 its reverse (113452315312), we get a palindrome (326965569623).

The spelling of 213513254311 in words is "two hundred thirteen billion, five hundred thirteen million, two hundred fifty-four thousand, three hundred eleven".