831525133 has 2 divisors, whose sum is σ = 831525134. Its totient is φ = 831525132.

The previous prime is 831525127. The next prime is 831525137. The reversal of 831525133 is 331525138.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 827252644 + 4272489 = 28762^2 + 2067^2 .

It is a cyclic number.

It is not a de Polignac number, because 831525133 - 2²⁹ = 294654221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 831525095 and 831525104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (831525137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415762566 + 415762567.

It is an arithmetic number, because the mean of its divisors is an integer number (415762567).

Almost surely, 2^831525133 is an apocalyptic number.

It is an amenable number.

831525133 is a deficient number, since it is larger than the sum of its proper divisors (1).

831525133 is an equidigital number, since it uses as much as digits as its factorization.

831525133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 831525133 is about 28836.1775032684. The cubic root of 831525133 is about 940.3549033342.

The spelling of 831525133 in words is "eight hundred thirty-one million, five hundred twenty-five thousand, one hundred thirty-three".