135217203 has 32 divisors (see below), whose sum is σ = 205528320. Its totient is φ = 78341760.

The previous prime is 135217183. The next prime is 135217213. The reversal of 135217203 is 302712531.

It is not a de Polignac number, because 135217203 - 2¹² = 135213107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135217213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71101 + ... + 72977.

It is an arithmetic number, because the mean of its divisors is an integer number (6422760).

Almost surely, 2^135217203 is an apocalyptic number.

135217203 is a deficient number, since it is larger than the sum of its proper divisors (70311117).

135217203 is a wasteful number, since it uses less digits than its factorization.

135217203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 135217203 is about 11628.2932109575. The cubic root of 135217203 is about 513.2677565169.

Adding to 135217203 its reverse (302712531), we get a palindrome (437929734).

The spelling of 135217203 in words is "one hundred thirty-five million, two hundred seventeen thousand, two hundred three".