31679423 has 2 divisors, whose sum is σ = 31679424. Its totient is φ = 31679422.

The previous prime is 31679413. The next prime is 31679467. The reversal of 31679423 is 32497613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31679423 - 2⁶ = 31679359 is a prime.

It is a super-2 number, since 2×31679423² = 2007171683225858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31679413) 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, 15839711 + 15839712.

It is an arithmetic number, because the mean of its divisors is an integer number (15839712).

Almost surely, 2^31679423 is an apocalyptic number.

31679423 is a deficient number, since it is larger than the sum of its proper divisors (1).

31679423 is an equidigital number, since it uses as much as digits as its factorization.

31679423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 31679423 is about 5628.4476545492. The cubic root of 31679423 is about 316.4164747104.

The spelling of 31679423 in words is "thirty-one million, six hundred seventy-nine thousand, four hundred twenty-three".