253545342313 has 4 divisors (see below), whose sum is σ = 253552236868. Its totient is φ = 253538447760.

The previous prime is 253545342263. The next prime is 253545342353. The reversal of 253545342313 is 313243545352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110534306089 + 143011036224 = 332467^2 + 378168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253545342313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253545342353) 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, 3391818 + ... + 3465763.

It is an arithmetic number, because the mean of its divisors is an integer number (63388059217).

Almost surely, 2^253545342313 is an apocalyptic number.

It is an amenable number.

253545342313 is a deficient number, since it is larger than the sum of its proper divisors (6894555).

253545342313 is an equidigital number, since it uses as much as digits as its factorization.

253545342313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6894554.

The product of its digits is 648000, while the sum is 40.

Adding to 253545342313 its reverse (313243545352), we get a palindrome (566788887665).

The spelling of 253545342313 in words is "two hundred fifty-three billion, five hundred forty-five million, three hundred forty-two thousand, three hundred thirteen".