31389082 has 8 divisors (see below), whose sum is σ = 47347200. Its totient is φ = 15606684.

The previous prime is 31389079. The next prime is 31389101. The reversal of 31389082 is 28098313.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 43482 + ... + 44197.

It is an arithmetic number, because the mean of its divisors is an integer number (5918400).

Almost surely, 2^31389082 is an apocalyptic number.

31389082 is a deficient number, since it is larger than the sum of its proper divisors (15958118).

31389082 is a wasteful number, since it uses less digits than its factorization.

31389082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87860.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 31389082 is about 5602.5960054246. The cubic root of 31389082 is about 315.4468571828.

The spelling of 31389082 in words is "thirty-one million, three hundred eighty-nine thousand, eighty-two".