133968411 has 20 divisors (see below), whose sum is σ = 210661000. Its totient is φ = 84610656.

The previous prime is 133968403. The next prime is 133968431. The reversal of 133968411 is 114869331.

It is not a de Polignac number, because 133968411 - 2³ = 133968403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133968431) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 41986 + ... + 45063.

It is an arithmetic number, because the mean of its divisors is an integer number (10533050).

Almost surely, 2^133968411 is an apocalyptic number.

133968411 is a deficient number, since it is larger than the sum of its proper divisors (76692589).

133968411 is an equidigital number, since it uses as much as digits as its factorization.

133968411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87080 (or 87071 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 133968411 is about 11574.4723853833. The cubic root of 133968411 is about 511.6827805418.

The spelling of 133968411 in words is "one hundred thirty-three million, nine hundred sixty-eight thousand, four hundred eleven".