133411331 has 16 divisors (see below), whose sum is σ = 145228800. Its totient is φ = 122148000.

The previous prime is 133411319. The next prime is 133411337. The reversal of 133411331 is 133114331.

It is a cyclic number.

It is not a de Polignac number, because 133411331 - 2¹⁸ = 133149187 is a prime.

It is a super-2 number, since 2×133411331² = 35597166478383122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133411337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67406 + ... + 69356.

It is an arithmetic number, because the mean of its divisors is an integer number (9076800).

Almost surely, 2^133411331 is an apocalyptic number.

133411331 is a deficient number, since it is larger than the sum of its proper divisors (11817469).

133411331 is a wasteful number, since it uses less digits than its factorization.

133411331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090.

The product of its digits is 324, while the sum is 20.

The square root of 133411331 is about 11550.3822880457. The cubic root of 133411331 is about 510.9725527567.

Adding to 133411331 its reverse (133114331), we get a palindrome (266525662).

The spelling of 133411331 in words is "one hundred thirty-three million, four hundred eleven thousand, three hundred thirty-one".