135379523 has 4 divisors (see below), whose sum is σ = 138527928. Its totient is φ = 132231120.

The previous prime is 135379507. The next prime is 135379529. The reversal of 135379523 is 325973531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325973531 = 13 ⋅25074887.

It is a cyclic number.

It is not a de Polignac number, because 135379523 - 2⁴ = 135379507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135379529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1574138 + ... + 1574223.

It is an arithmetic number, because the mean of its divisors is an integer number (34631982).

Almost surely, 2^135379523 is an apocalyptic number.

135379523 is a deficient number, since it is larger than the sum of its proper divisors (3148405).

135379523 is an equidigital number, since it uses as much as digits as its factorization.

135379523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148404.

The product of its digits is 85050, while the sum is 38.

The square root of 135379523 is about 11635.2706457564. The cubic root of 135379523 is about 513.4730565946.

The spelling of 135379523 in words is "one hundred thirty-five million, three hundred seventy-nine thousand, five hundred twenty-three".