8422117931 has 2 divisors, whose sum is σ = 8422117932. Its totient is φ = 8422117930.

The previous prime is 8422117877. The next prime is 8422117993. The reversal of 8422117931 is 1397112248.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8422117931 - 2⁶ = 8422117867 is a prime.

It is a super-2 number, since 2×8422117931² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8422117031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4211058965 + 4211058966.

It is an arithmetic number, because the mean of its divisors is an integer number (4211058966).

Almost surely, 2^8422117931 is an apocalyptic number.

8422117931 is a deficient number, since it is larger than the sum of its proper divisors (1).

8422117931 is an equidigital number, since it uses as much as digits as its factorization.

8422117931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The square root of 8422117931 is about 91772.0977803166. The cubic root of 8422117931 is about 2034.5753233273.

The spelling of 8422117931 in words is "eight billion, four hundred twenty-two million, one hundred seventeen thousand, nine hundred thirty-one".