133285215 has 16 divisors (see below), whose sum is σ = 243721728. Its totient is φ = 60930336.

The previous prime is 133285181. The next prime is 133285223. The reversal of 133285215 is 512582331.

It is not a de Polignac number, because 133285215 - 2⁹ = 133284703 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634587 + ... + 634796.

It is an arithmetic number, because the mean of its divisors is an integer number (15232608).

Almost surely, 2^133285215 is an apocalyptic number.

133285215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133285215 is a deficient number, since it is larger than the sum of its proper divisors (110436513).

133285215 is a wasteful number, since it uses less digits than its factorization.

133285215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269398.

The product of its digits is 7200, while the sum is 30.

The square root of 133285215 is about 11544.9216108209. The cubic root of 133285215 is about 510.8114916468.

The spelling of 133285215 in words is "one hundred thirty-three million, two hundred eighty-five thousand, two hundred fifteen".