831100133 has 2 divisors, whose sum is σ = 831100134. Its totient is φ = 831100132.

The previous prime is 831100117. The next prime is 831100141. The reversal of 831100133 is 331001138.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 816644929 + 14455204 = 28577^2 + 3802^2 .

It is a cyclic number.

It is not a de Polignac number, because 831100133 - 2⁴ = 831100117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (831100103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415550066 + 415550067.

It is an arithmetic number, because the mean of its divisors is an integer number (415550067).

Almost surely, 2^831100133 is an apocalyptic number.

It is an amenable number.

831100133 is a deficient number, since it is larger than the sum of its proper divisors (1).

831100133 is an equidigital number, since it uses as much as digits as its factorization.

831100133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 831100133 is about 28828.8073461252. The cubic root of 831100133 is about 940.1946680726.

The spelling of 831100133 in words is "eight hundred thirty-one million, one hundred thousand, one hundred thirty-three".