213206312053 has 4 divisors (see below), whose sum is σ = 243664356640. Its totient is φ = 182748267468.

The previous prime is 213206312047. The next prime is 213206312063. The reversal of 213206312053 is 350213602312.

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 213206312053 - 2²⁵ = 213172757621 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 (213206312063) 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, 15229022283 + ... + 15229022296.

It is an arithmetic number, because the mean of its divisors is an integer number (60916089160).

Almost surely, 2^213206312053 is an apocalyptic number.

It is an amenable number.

213206312053 is a deficient number, since it is larger than the sum of its proper divisors (30458044587).

213206312053 is an equidigital number, since it uses as much as digits as its factorization.

213206312053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30458044586.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 213206312053 its reverse (350213602312), we get a palindrome (563419914365).

The spelling of 213206312053 in words is "two hundred thirteen billion, two hundred six million, three hundred twelve thousand, fifty-three".