31678485 has 16 divisors (see below), whose sum is σ = 50930880. Its totient is φ = 16813440.

The previous prime is 31678483. The next prime is 31678489. The reversal of 31678485 is 58487613.

It is not a de Polignac number, because 31678485 - 2¹ = 31678483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31678481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1840 + ... + 8169.

It is an arithmetic number, because the mean of its divisors is an integer number (3183180).

Almost surely, 2^31678485 is an apocalyptic number.

It is an amenable number.

31678485 is a deficient number, since it is larger than the sum of its proper divisors (19252395).

31678485 is a wasteful number, since it uses less digits than its factorization.

31678485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10228.

The product of its digits is 161280, while the sum is 42.

The square root of 31678485 is about 5628.3643272269. The cubic root of 31678485 is about 316.4133517412.

The spelling of 31678485 in words is "thirty-one million, six hundred seventy-eight thousand, four hundred eighty-five".