7685823131 has 16 divisors (see below), whose sum is σ = 9356207616. Its totient is φ = 6163184256.

The previous prime is 7685823071. The next prime is 7685823169. The reversal of 7685823131 is 1313285867.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7685823131 - 2²⁶ = 7618714267 is a prime.

It is a super-2 number, since 2×7685823131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7685823731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173501 + ... + 213246.

It is an arithmetic number, because the mean of its divisors is an integer number (584762976).

Almost surely, 2^7685823131 is an apocalyptic number.

7685823131 is a deficient number, since it is larger than the sum of its proper divisors (1670384485).

7685823131 is a wasteful number, since it uses less digits than its factorization.

7685823131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386938.

The product of its digits is 241920, while the sum is 44.

The square root of 7685823131 is about 87668.8264493144. The cubic root of 7685823131 is about 1973.4681819606.

The spelling of 7685823131 in words is "seven billion, six hundred eighty-five million, eight hundred twenty-three thousand, one hundred thirty-one".