31678482 has 32 divisors (see below), whose sum is σ = 69906240. Its totient is φ = 9489920.

The previous prime is 31678481. The next prime is 31678483. The reversal of 31678482 is 28487613.

It is an interprime number because it is at equal distance from previous prime (31678481) and next prime (31678483).

It is a self number, because there is not a number n which added to its sum of digits gives 31678482.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3178 + ... + 8570.

It is an arithmetic number, because the mean of its divisors is an integer number (2184570).

Almost surely, 2^31678482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31678482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34953120).

31678482 is an abundant number, since it is smaller than the sum of its proper divisors (38227758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31678482 is a wasteful number, since it uses less digits than its factorization.

31678482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498.

The product of its digits is 64512, while the sum is 39.

The square root of 31678482 is about 5628.3640607196. The cubic root of 31678482 is about 316.4133417530.

The spelling of 31678482 in words is "thirty-one million, six hundred seventy-eight thousand, four hundred eighty-two".