135212315 has 24 divisors (see below), whose sum is σ = 189413280. Its totient is φ = 92659392.

The previous prime is 135212299. The next prime is 135212321. The reversal of 135212315 is 513212531.

It is a happy number.

It is not a de Polignac number, because 135212315 - 2⁴ = 135212299 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83231 + ... + 84839.

It is an arithmetic number, because the mean of its divisors is an integer number (7892220).

Almost surely, 2^135212315 is an apocalyptic number.

135212315 is a deficient number, since it is larger than the sum of its proper divisors (54200965).

135212315 is an frugal number, since it uses more digits than its factorization.

135212315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649 (or 1621 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 135212315 is about 11628.0830320393. The cubic root of 135212315 is about 513.2615716949.

Adding to 135212315 its reverse (513212531), we get a palindrome (648424846).

The spelling of 135212315 in words is "one hundred thirty-five million, two hundred twelve thousand, three hundred fifteen".