213440350263 has 16 divisors (see below), whose sum is σ = 325469450496. Its totient is φ = 121880784960.

The previous prime is 213440350177. The next prime is 213440350309. The reversal of 213440350263 is 362053044312.

It is a happy number.

It is not a de Polignac number, because 213440350263 - 2²⁰ = 213439301687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213440350663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3516253 + ... + 3576438.

It is an arithmetic number, because the mean of its divisors is an integer number (20341840656).

Almost surely, 2^213440350263 is an apocalyptic number.

213440350263 is a deficient number, since it is larger than the sum of its proper divisors (112029100233).

213440350263 is a wasteful number, since it uses less digits than its factorization.

213440350263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7094134.

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 213440350263 its reverse (362053044312), we get a palindrome (575493394575).

The spelling of 213440350263 in words is "two hundred thirteen billion, four hundred forty million, three hundred fifty thousand, two hundred sixty-three".