213512135311 has 4 divisors (see below), whose sum is σ = 213513963952. Its totient is φ = 213510306672.

The previous prime is 213512135293. The next prime is 213512135323. The reversal of 213512135311 is 113531215312.

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 213512135311 - 2⁹ = 213512134799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213512135311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213512135411) 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, 726291 + ... + 976996.

It is an arithmetic number, because the mean of its divisors is an integer number (53378490988).

Almost surely, 2^213512135311 is an apocalyptic number.

213512135311 is a deficient number, since it is larger than the sum of its proper divisors (1828641).

213512135311 is a wasteful number, since it uses less digits than its factorization.

213512135311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828640.

The product of its digits is 2700, while the sum is 28.

The spelling of 213512135311 in words is "two hundred thirteen billion, five hundred twelve million, one hundred thirty-five thousand, three hundred eleven".