83131133 has 2 divisors, whose sum is σ = 83131134. Its totient is φ = 83131132.

The previous prime is 83131129. The next prime is 83131151. The reversal of 83131133 is 33113138.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70930084 + 12201049 = 8422^2 + 3493^2 .

It is a cyclic number.

It is not a de Polignac number, because 83131133 - 2² = 83131129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 83131099 and 83131108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83131033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41565566 + 41565567.

It is an arithmetic number, because the mean of its divisors is an integer number (41565567).

Almost surely, 2^83131133 is an apocalyptic number.

It is an amenable number.

83131133 is a deficient number, since it is larger than the sum of its proper divisors (1).

83131133 is an equidigital number, since it uses as much as digits as its factorization.

83131133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

The square root of 83131133 is about 9117.6275971329. The cubic root of 83131133 is about 436.4366697295.

The spelling of 83131133 in words is "eighty-three million, one hundred thirty-one thousand, one hundred thirty-three".