133011505 has 16 divisors (see below), whose sum is σ = 175462848. Its totient is φ = 95992000.

The previous prime is 133011493. The next prime is 133011511. The reversal of 133011505 is 505110331.

It is not a de Polignac number, because 133011505 - 2⁷ = 133011377 is a prime.

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, 2026 + ... + 16435.

It is an arithmetic number, because the mean of its divisors is an integer number (10966428).

Almost surely, 2^133011505 is an apocalyptic number.

It is an amenable number.

133011505 is a deficient number, since it is larger than the sum of its proper divisors (42451343).

133011505 is a wasteful number, since it uses less digits than its factorization.

133011505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18608.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 133011505 is about 11533.0613888941. The cubic root of 133011505 is about 510.4615903002.

Adding to 133011505 its reverse (505110331), we get a palindrome (638121836).

The spelling of 133011505 in words is "one hundred thirty-three million, eleven thousand, five hundred five".