31066117 has 2 divisors, whose sum is σ = 31066118. Its totient is φ = 31066116.

The previous prime is 31066111. The next prime is 31066127. The reversal of 31066117 is 71166013.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22268961 + 8797156 = 4719^2 + 2966^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31066117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31066091 and 31066100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31066111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15533058 + 15533059.

It is an arithmetic number, because the mean of its divisors is an integer number (15533059).

Almost surely, 2^31066117 is an apocalyptic number.

It is an amenable number.

31066117 is a deficient number, since it is larger than the sum of its proper divisors (1).

31066117 is an equidigital number, since it uses as much as digits as its factorization.

31066117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 31066117 is about 5573.6986822038. The cubic root of 31066117 is about 314.3612385498.

The spelling of 31066117 in words is "thirty-one million, sixty-six thousand, one hundred seventeen".