134520512552231 has 4 divisors (see below), whose sum is σ = 144868244287032. Its totient is φ = 124172780817432.

The previous prime is 134520512552213. The next prime is 134520512552297. The reversal of 134520512552231 is 132255215025431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134520512552231 is a prime.

It is a super-2 number, since 2×134520512552231² (a number of 29 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 (134520512552431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5173865867381 + ... + 5173865867406.

It is an arithmetic number, because the mean of its divisors is an integer number (36217061071758).

Almost surely, 2^{134520512552231} is an apocalyptic number.

134520512552231 is a deficient number, since it is larger than the sum of its proper divisors (10347731734801).

134520512552231 is a wasteful number, since it uses less digits than its factorization.

134520512552231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10347731734800.

The product of its (nonzero) digits is 360000, while the sum is 41.

Adding to 134520512552231 its reverse (132255215025431), we get a palindrome (266775727577662).

The spelling of 134520512552231 in words is "one hundred thirty-four trillion, five hundred twenty billion, five hundred twelve million, five hundred fifty-two thousand, two hundred thirty-one".