216037013 has 4 divisors (see below), whose sum is σ = 216068160. Its totient is φ = 216005868.

The previous prime is 216037007. The next prime is 216037039. The reversal of 216037013 is 310730612.

It is a happy number.

216037013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 216037013 - 2²⁰ = 214988437 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 216037013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216037313) 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, 68 + ... + 20786.

It is an arithmetic number, because the mean of its divisors is an integer number (54017040).

Almost surely, 2^216037013 is an apocalyptic number.

It is an amenable number.

216037013 is a deficient number, since it is larger than the sum of its proper divisors (31147).

216037013 is a wasteful number, since it uses less digits than its factorization.

216037013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31146.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 216037013 is about 14698.1976105916. The cubic root of 216037013 is about 600.0342693389.

Adding to 216037013 its reverse (310730612), we get a palindrome (526767625).

The spelling of 216037013 in words is "two hundred sixteen million, thirty-seven thousand, thirteen".