31875668 has 12 divisors (see below), whose sum is σ = 60853632. Its totient is φ = 14488920.

The previous prime is 31875667. The next prime is 31875671. The reversal of 31875668 is 86657813.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 724447 = 31875668 / (3 + 1 + 8 + 7 + 5 + 6 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31875661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362180 + ... + 362267.

It is an arithmetic number, because the mean of its divisors is an integer number (5071136).

Almost surely, 2^31875668 is an apocalyptic number.

It is an amenable number.

31875668 is a deficient number, since it is larger than the sum of its proper divisors (28977964).

31875668 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 31875668 = (65873168)₉.

31875668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724462 (or 724460 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 31875668 is about 5645.8540540825. The cubic root of 31875668 is about 317.0685001587.

The spelling of 31875668 in words is "thirty-one million, eight hundred seventy-five thousand, six hundred sixty-eight".