8125810831 has 2 divisors, whose sum is σ = 8125810832. Its totient is φ = 8125810830.

The previous prime is 8125810757. The next prime is 8125810843. The reversal of 8125810831 is 1380185218.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8125810831 - 2¹¹ = 8125808783 is a prime.

It is a super-2 number, since 2×8125810831² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8125810531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4062905415 + 4062905416.

It is an arithmetic number, because the mean of its divisors is an integer number (4062905416).

Almost surely, 2^8125810831 is an apocalyptic number.

8125810831 is a deficient number, since it is larger than the sum of its proper divisors (1).

8125810831 is an equidigital number, since it uses as much as digits as its factorization.

8125810831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 37.

The square root of 8125810831 is about 90143.2794555423. The cubic root of 8125810831 is about 2010.4297515129.

The spelling of 8125810831 in words is "eight billion, one hundred twenty-five million, eight hundred ten thousand, eight hundred thirty-one".