213756031061713 has 4 divisors (see below), whose sum is σ = 244292606927680. Its totient is φ = 183219455195748.

The previous prime is 213756031061647. The next prime is 213756031061953. The reversal of 213756031061713 is 317160130657312.

It is a happy number.

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 213756031061713 - 2²⁵ = 213755997507281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213756031064713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15268287932973 + ... + 15268287932986.

It is an arithmetic number, because the mean of its divisors is an integer number (61073151731920).

Almost surely, 2^{213756031061713} is an apocalyptic number.

It is an amenable number.

213756031061713 is a deficient number, since it is larger than the sum of its proper divisors (30536575865967).

213756031061713 is an equidigital number, since it uses as much as digits as its factorization.

213756031061713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30536575865966.

The product of its (nonzero) digits is 476280, while the sum is 46.

The spelling of 213756031061713 in words is "two hundred thirteen trillion, seven hundred fifty-six billion, thirty-one million, sixty-one thousand, seven hundred thirteen".