213255345253 has 4 divisors (see below), whose sum is σ = 213258364480. Its totient is φ = 213252326028.

The previous prime is 213255345211. The next prime is 213255345311. The reversal of 213255345253 is 352543552312.

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 a de Polignac number, because none of the positive numbers 2^k-213255345253 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 (213255345553) 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, 1401063 + ... + 1545796.

It is an arithmetic number, because the mean of its divisors is an integer number (53314591120).

Almost surely, 2^213255345253 is an apocalyptic number.

It is an amenable number.

213255345253 is a deficient number, since it is larger than the sum of its proper divisors (3019227).

213255345253 is an equidigital number, since it uses as much as digits as its factorization.

213255345253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3019226.

The product of its digits is 540000, while the sum is 40.

Adding to 213255345253 its reverse (352543552312), we get a palindrome (565798897565).

The spelling of 213255345253 in words is "two hundred thirteen billion, two hundred fifty-five million, three hundred forty-five thousand, two hundred fifty-three".