31289068 has 12 divisors (see below), whose sum is σ = 56091672. Its totient is φ = 15262880.

The previous prime is 31289051. The next prime is 31289101. The reversal of 31289068 is 86098213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95230 + ... + 95557.

It is an arithmetic number, because the mean of its divisors is an integer number (4674306).

Almost surely, 2^31289068 is an apocalyptic number.

It is an amenable number.

31289068 is a deficient number, since it is larger than the sum of its proper divisors (24802604).

31289068 is a wasteful number, since it uses less digits than its factorization.

31289068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190832 (or 190830 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 31289068 is about 5593.6632004439. The cubic root of 31289068 is about 315.1114680671. Note that the first 3 decimals are identical.

The spelling of 31289068 in words is "thirty-one million, two hundred eighty-nine thousand, sixty-eight".