133534215 has 12 divisors (see below), whose sum is σ = 231459384. Its totient is φ = 71218224.

The previous prime is 133534213. The next prime is 133534217. The reversal of 133534215 is 512435331.

It is an interprime number because it is at equal distance from previous prime (133534213) and next prime (133534217).

It is not a de Polignac number, because 133534215 - 2¹ = 133534213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133534213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1483669 + ... + 1483758.

It is an arithmetic number, because the mean of its divisors is an integer number (19288282).

Almost surely, 2^133534215 is an apocalyptic number.

133534215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133534215 is a deficient number, since it is larger than the sum of its proper divisors (97925169).

133534215 is a wasteful number, since it uses less digits than its factorization.

133534215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967438 (or 2967435 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 133534215 is about 11555.7005412913. The cubic root of 133534215 is about 511.1293887166.

Adding to 133534215 its reverse (512435331), we get a palindrome (645969546).

The spelling of 133534215 in words is "one hundred thirty-three million, five hundred thirty-four thousand, two hundred fifteen".