31679071 has 2 divisors, whose sum is σ = 31679072. Its totient is φ = 31679070.

The previous prime is 31679059. The next prime is 31679077. The reversal of 31679071 is 17097613.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31679071 - 2⁷ = 31678943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31679077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15839535 + 15839536.

It is an arithmetic number, because the mean of its divisors is an integer number (15839536).

Almost surely, 2^31679071 is an apocalyptic number.

31679071 is a deficient number, since it is larger than the sum of its proper divisors (1).

31679071 is an equidigital number, since it uses as much as digits as its factorization.

31679071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 31679071 is about 5628.4163847391. The cubic root of 31679071 is about 316.4153027718.

The spelling of 31679071 in words is "thirty-one million, six hundred seventy-nine thousand, seventy-one".