31712927 has 2 divisors, whose sum is σ = 31712928. Its totient is φ = 31712926.

The previous prime is 31712831. The next prime is 31712963. The reversal of 31712927 is 72921713.

It is a strong prime.

It is an emirp because it is prime and its reverse (72921713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31712927 - 2¹⁴ = 31696543 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 31712893 and 31712902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31712977) 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, 15856463 + 15856464.

It is an arithmetic number, because the mean of its divisors is an integer number (15856464).

Almost surely, 2^31712927 is an apocalyptic number.

31712927 is a deficient number, since it is larger than the sum of its proper divisors (1).

31712927 is an equidigital number, since it uses as much as digits as its factorization.

31712927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 32.

The square root of 31712927 is about 5631.4231771374. The cubic root of 31712927 is about 316.5279822390.

The spelling of 31712927 in words is "thirty-one million, seven hundred twelve thousand, nine hundred twenty-seven".