135318723 has 4 divisors (see below), whose sum is σ = 180424968. Its totient is φ = 90212480.

The previous prime is 135318719. The next prime is 135318749. The reversal of 135318723 is 327813531.

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 135318723 - 2² = 135318719 is a prime.

It is a super-2 number, since 2×135318723² = 36622313588701458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135318773) 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, 22553118 + ... + 22553123.

It is an arithmetic number, because the mean of its divisors is an integer number (45106242).

Almost surely, 2^135318723 is an apocalyptic number.

135318723 is a deficient number, since it is larger than the sum of its proper divisors (45106245).

135318723 is an equidigital number, since it uses as much as digits as its factorization.

135318723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45106244.

The product of its digits is 15120, while the sum is 33.

The square root of 135318723 is about 11632.6576069271. The cubic root of 135318723 is about 513.3961768324.

The spelling of 135318723 in words is "one hundred thirty-five million, three hundred eighteen thousand, seven hundred twenty-three".