253531521311 has 8 divisors (see below), whose sum is σ = 258071734800. Its totient is φ = 248999410240.

The previous prime is 253531521293. The next prime is 253531521361. The reversal of 253531521311 is 113125135352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253531521311 - 2¹⁸ = 253531259167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253531521361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1962446 + ... + 2087643.

It is an arithmetic number, because the mean of its divisors is an integer number (32258966850).

Almost surely, 2^253531521311 is an apocalyptic number.

253531521311 is a deficient number, since it is larger than the sum of its proper divisors (4540213489).

253531521311 is a wasteful number, since it uses less digits than its factorization.

253531521311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4051209.

The product of its digits is 13500, while the sum is 32.

Adding to 253531521311 its reverse (113125135352), we get a palindrome (366656656663).

The spelling of 253531521311 in words is "two hundred fifty-three billion, five hundred thirty-one million, five hundred twenty-one thousand, three hundred eleven".