31660927 has 2 divisors, whose sum is σ = 31660928. Its totient is φ = 31660926.

The previous prime is 31660883. The next prime is 31660961. The reversal of 31660927 is 72906613.

It is an a-pointer prime, because the next prime (31660961) can be obtained adding 31660927 to its sum of digits (34).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31660927 - 2⁷ = 31660799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31660892 and 31660901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31660127) 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 as a sum of consecutive naturals, namely, 15830463 + 15830464.

It is an arithmetic number, because the mean of its divisors is an integer number (15830464).

Almost surely, 2^31660927 is an apocalyptic number.

31660927 is a deficient number, since it is larger than the sum of its proper divisors (1).

31660927 is an equidigital number, since it uses as much as digits as its factorization.

31660927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 31660927 is about 5626.8043328340. The cubic root of 31660927 is about 316.3548829061.

The spelling of 31660927 in words is "thirty-one million, six hundred sixty thousand, nine hundred twenty-seven".