133716523 has 4 divisors (see below), whose sum is σ = 135712360. Its totient is φ = 131720688.

The previous prime is 133716497. The next prime is 133716529. The reversal of 133716523 is 325617331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325617331 = 13 ⋅25047487.

It is a cyclic number.

It is not a de Polignac number, because 133716523 - 2¹³ = 133708331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133716529) 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, 997818 + ... + 997951.

It is an arithmetic number, because the mean of its divisors is an integer number (33928090).

Almost surely, 2^133716523 is an apocalyptic number.

133716523 is a deficient number, since it is larger than the sum of its proper divisors (1995837).

133716523 is an equidigital number, since it uses as much as digits as its factorization.

133716523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995836.

The product of its digits is 11340, while the sum is 31.

The square root of 133716523 is about 11563.5860787214. The cubic root of 133716523 is about 511.3618899339.

The spelling of 133716523 in words is "one hundred thirty-three million, seven hundred sixteen thousand, five hundred twenty-three".