135370321 has 8 divisors (see below), whose sum is σ = 141134400. Its totient is φ = 129725232.

The previous prime is 135370297. The next prime is 135370327. The reversal of 135370321 is 123073531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135370321 - 2²³ = 126981713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135370327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27421 + ... + 31978.

It is an arithmetic number, because the mean of its divisors is an integer number (17641800).

Almost surely, 2^135370321 is an apocalyptic number.

It is an amenable number.

135370321 is a deficient number, since it is larger than the sum of its proper divisors (5764079).

135370321 is an equidigital number, since it uses as much as digits as its factorization.

135370321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59495.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 135370321 is about 11634.8752034562. The cubic root of 135370321 is about 513.4614224222.

The spelling of 135370321 in words is "one hundred thirty-five million, three hundred seventy thousand, three hundred twenty-one".