135423633 has 4 divisors (see below), whose sum is σ = 180564848. Its totient is φ = 90282420.

The previous prime is 135423619. The next prime is 135423653. The reversal of 135423633 is 336324531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 336324531 = 3 ⋅112108177.

It is not a de Polignac number, because 135423633 - 2⁵ = 135423601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 135423633.

It is not an unprimeable number, because it can be changed into a prime (135423653) 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, 22570603 + ... + 22570608.

It is an arithmetic number, because the mean of its divisors is an integer number (45141212).

Almost surely, 2^135423633 is an apocalyptic number.

It is an amenable number.

135423633 is a deficient number, since it is larger than the sum of its proper divisors (45141215).

135423633 is an equidigital number, since it uses as much as digits as its factorization.

135423633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45141214.

The product of its digits is 19440, while the sum is 30.

The square root of 135423633 is about 11637.1660209864. The cubic root of 135423633 is about 513.5288179499.

The spelling of 135423633 in words is "one hundred thirty-five million, four hundred twenty-three thousand, six hundred thirty-three".