31678132 has 6 divisors (see below), whose sum is σ = 55436738. Its totient is φ = 15839064.

The previous prime is 31678091. The next prime is 31678133. The reversal of 31678132 is 23187613.

It can be written as a sum of positive squares in only one way, i.e., 17943696 + 13734436 = 4236^2 + 3706^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31678094 and 31678103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31678133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3959763 + ... + 3959770.

Almost surely, 2^31678132 is an apocalyptic number.

It is an amenable number.

31678132 is a deficient number, since it is larger than the sum of its proper divisors (23758606).

31678132 is a wasteful number, since it uses less digits than its factorization.

31678132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7919537 (or 7919535 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 31678132 is about 5628.3329681176. The cubic root of 31678132 is about 316.4121764501.

The spelling of 31678132 in words is "thirty-one million, six hundred seventy-eight thousand, one hundred thirty-two".