133103811 has 4 divisors (see below), whose sum is σ = 177471752. Its totient is φ = 88735872.

The previous prime is 133103779. The next prime is 133103821. The reversal of 133103811 is 118301331.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 133103811 - 2⁵ = 133103779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133103821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22183966 + ... + 22183971.

It is an arithmetic number, because the mean of its divisors is an integer number (44367938).

Almost surely, 2^133103811 is an apocalyptic number.

133103811 is a deficient number, since it is larger than the sum of its proper divisors (44367941).

133103811 is an equidigital number, since it uses as much as digits as its factorization.

133103811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44367940.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 133103811 is about 11537.0624944134. The cubic root of 133103811 is about 510.5796446798.

The spelling of 133103811 in words is "one hundred thirty-three million, one hundred three thousand, eight hundred eleven".