134253523531 has 4 divisors (see below), whose sum is σ = 134254298200. Its totient is φ = 134252748864.

The previous prime is 134253523529. The next prime is 134253523567. The reversal of 134253523531 is 135325352431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 135325352431 = 197 ⋅686930723.

It is a cyclic number.

It is not a de Polignac number, because 134253523531 - 2¹ = 134253523529 is a prime.

It is a super-2 number, since 2×134253523531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134253523231) 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, 5275 + ... + 518203.

It is an arithmetic number, because the mean of its divisors is an integer number (33563574550).

Almost surely, 2^134253523531 is an apocalyptic number.

134253523531 is a deficient number, since it is larger than the sum of its proper divisors (774669).

134253523531 is an equidigital number, since it uses as much as digits as its factorization.

134253523531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774668.

The product of its digits is 162000, while the sum is 37.

Adding to 134253523531 its reverse (135325352431), we get a palindrome (269578875962).

The spelling of 134253523531 in words is "one hundred thirty-four billion, two hundred fifty-three million, five hundred twenty-three thousand, five hundred thirty-one".