253105213013 has 4 divisors (see below), whose sum is σ = 253321358688. Its totient is φ = 252889067340.

The previous prime is 253105213003. The next prime is 253105213033. The reversal of 253105213013 is 310312501352.

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 253105213013 - 2¹⁸ = 253104950869 is a prime.

It is a super-2 number, since 2×253105213013² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253105213003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108071081 + ... + 108073422.

It is an arithmetic number, because the mean of its divisors is an integer number (63330339672).

Almost surely, 2^253105213013 is an apocalyptic number.

It is an amenable number.

253105213013 is a deficient number, since it is larger than the sum of its proper divisors (216145675).

253105213013 is a wasteful number, since it uses less digits than its factorization.

253105213013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216145674.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 253105213013 its reverse (310312501352), we get a palindrome (563417714365).

The spelling of 253105213013 in words is "two hundred fifty-three billion, one hundred five million, two hundred thirteen thousand, thirteen".