31678988 has 24 divisors (see below), whose sum is σ = 61508160. Its totient is φ = 14154320.

The previous prime is 31678963. The next prime is 31679029. The reversal of 31678988 is 88987613.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3506 + ... + 8697.

It is an arithmetic number, because the mean of its divisors is an integer number (2562840).

Almost surely, 2^31678988 is an apocalyptic number.

It is an amenable number.

31678988 is a deficient number, since it is larger than the sum of its proper divisors (29829172).

31678988 is a wasteful number, since it uses less digits than its factorization.

31678988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12277 (or 12275 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 31678988 is about 5628.4090114348. The cubic root of 31678988 is about 316.4150264328.

The spelling of 31678988 in words is "thirty-one million, six hundred seventy-eight thousand, nine hundred eighty-eight".