133244215 has 32 divisors (see below), whose sum is σ = 187306560. Its totient is φ = 90077184.

The previous prime is 133244203. The next prime is 133244257. The reversal of 133244215 is 512442331.

It is a cyclic number.

It is not a de Polignac number, because 133244215 - 2¹⁵ = 133211447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133244215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39256 + ... + 42514.

It is an arithmetic number, because the mean of its divisors is an integer number (5853330).

Almost surely, 2^133244215 is an apocalyptic number.

133244215 is a deficient number, since it is larger than the sum of its proper divisors (54062345).

133244215 is a wasteful number, since it uses less digits than its factorization.

133244215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331.

The product of its digits is 2880, while the sum is 25.

The square root of 133244215 is about 11543.1458017301. The cubic root of 133244215 is about 510.7591091952.

Adding to 133244215 its reverse (512442331), we get a palindrome (645686546).

The spelling of 133244215 in words is "one hundred thirty-three million, two hundred forty-four thousand, two hundred fifteen".