31718342 has 16 divisors (see below), whose sum is σ = 48399360. Its totient is φ = 15587208.

The previous prime is 31718317. The next prime is 31718347. The reversal of 31718342 is 24381713.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31718347) 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 in 7 ways as a sum of consecutive naturals, for example, 57713 + ... + 58259.

It is an arithmetic number, because the mean of its divisors is an integer number (3024960).

Almost surely, 2^31718342 is an apocalyptic number.

31718342 is a deficient number, since it is larger than the sum of its proper divisors (16681018).

31718342 is a wasteful number, since it uses less digits than its factorization.

31718342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995.

The product of its digits is 4032, while the sum is 29.

The square root of 31718342 is about 5631.9039409422. The cubic root of 31718342 is about 316.5459969903.

The spelling of 31718342 in words is "thirty-one million, seven hundred eighteen thousand, three hundred forty-two".