133135302523 has 4 divisors (see below), whose sum is σ = 135317848528. Its totient is φ = 130952756520.

The previous prime is 133135302493. The next prime is 133135302569. The reversal of 133135302523 is 325203531331.

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

It is a cyclic number.

It is not a de Polignac number, because 133135302523 - 2⁹ = 133135302011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133135302583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1091272911 + ... + 1091273032.

It is an arithmetic number, because the mean of its divisors is an integer number (33829462132).

Almost surely, 2^133135302523 is an apocalyptic number.

133135302523 is a deficient number, since it is larger than the sum of its proper divisors (2182546005).

133135302523 is an equidigital number, since it uses as much as digits as its factorization.

133135302523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182546004.

The product of its (nonzero) digits is 24300, while the sum is 31.

Adding to 133135302523 its reverse (325203531331), we get a palindrome (458338833854).

The spelling of 133135302523 in words is "one hundred thirty-three billion, one hundred thirty-five million, three hundred two thousand, five hundred twenty-three".