133196811 has 16 divisors (see below), whose sum is σ = 195742848. Its totient is φ = 79891200.

The previous prime is 133196809. The next prime is 133196813. The reversal of 133196811 is 118691331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (133196809) and next prime (133196813).

It is not a de Polignac number, because 133196811 - 2¹ = 133196809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (133196813) 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, 17605 + ... + 24006.

It is an arithmetic number, because the mean of its divisors is an integer number (12233928).

Almost surely, 2^133196811 is an apocalyptic number.

133196811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133196811 is a deficient number, since it is larger than the sum of its proper divisors (62546037).

133196811 is a wasteful number, since it uses less digits than its factorization.

133196811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41722.

The product of its digits is 3888, while the sum is 33.

The square root of 133196811 is about 11541.0922793295. The cubic root of 133196811 is about 510.6985314641.

The spelling of 133196811 in words is "one hundred thirty-three million, one hundred ninety-six thousand, eight hundred eleven".