831066149 has 2 divisors, whose sum is σ = 831066150. Its totient is φ = 831066148.

The previous prime is 831066133. The next prime is 831066161. The reversal of 831066149 is 941660138.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 661415524 + 169650625 = 25718^2 + 13025^2 .

It is a cyclic number.

It is not a de Polignac number, because 831066149 - 2⁴ = 831066133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (831066349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415533074 + 415533075.

It is an arithmetic number, because the mean of its divisors is an integer number (415533075).

Almost surely, 2^831066149 is an apocalyptic number.

It is an amenable number.

831066149 is a deficient number, since it is larger than the sum of its proper divisors (1).

831066149 is an equidigital number, since it uses as much as digits as its factorization.

831066149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 831066149 is about 28828.2179296605. The cubic root of 831066149 is about 940.1818529256.

The spelling of 831066149 in words is "eight hundred thirty-one million, sixty-six thousand, one hundred forty-nine".