135315603 has 10 divisors (see below), whose sum is σ = 202138244. Its totient is φ = 90210348.

The previous prime is 135315599. The next prime is 135315611. The reversal of 135315603 is 306513531.

135315603 is a `hidden beast` number, since 1 + 3 + 53 + 1 + 5 + 603 = 666.

It is not a de Polignac number, because 135315603 - 2² = 135315599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135315613) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 835201 + ... + 835362.

Almost surely, 2^135315603 is an apocalyptic number.

135315603 is a deficient number, since it is larger than the sum of its proper divisors (66822641).

135315603 is an equidigital number, since it uses as much as digits as its factorization.

135315603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670575 (or 1670566 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The square root of 135315603 is about 11632.5235009434. The cubic root of 135315603 is about 513.3922310656.

The spelling of 135315603 in words is "one hundred thirty-five million, three hundred fifteen thousand, six hundred three".