31677667 has 12 divisors (see below), whose sum is σ = 37403400. Its totient is φ = 26744256.

The previous prime is 31677649. The next prime is 31677673. The reversal of 31677667 is 76677613.

It is a de Polignac number, because none of the positive numbers 2^k-31677667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31677067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1542 + ... + 8107.

It is an arithmetic number, because the mean of its divisors is an integer number (3116950).

Almost surely, 2^31677667 is an apocalyptic number.

31677667 is a deficient number, since it is larger than the sum of its proper divisors (5725733).

31677667 is an equidigital number, since it uses as much as digits as its factorization.

31677667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9730 (or 9723 counting only the distinct ones).

The product of its digits is 222264, while the sum is 43.

The square root of 31677667 is about 5628.2916591094. The cubic root of 31677667 is about 316.4106282487.

The spelling of 31677667 in words is "thirty-one million, six hundred seventy-seven thousand, six hundred sixty-seven".