31132189 has 8 divisors (see below), whose sum is σ = 34685568. Its totient is φ = 27699360.

The previous prime is 31132187. The next prime is 31132193. The reversal of 31132189 is 98123113.

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

It is a cyclic number.

It is not a de Polignac number, because 31132189 - 2¹ = 31132187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31132183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29592 + ... + 30625.

It is an arithmetic number, because the mean of its divisors is an integer number (4335696).

Almost surely, 2^31132189 is an apocalyptic number.

It is an amenable number.

31132189 is a deficient number, since it is larger than the sum of its proper divisors (3553379).

31132189 is a wasteful number, since it uses less digits than its factorization.

31132189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60275.

The product of its digits is 1296, while the sum is 28.

The square root of 31132189 is about 5579.6226574922. The cubic root of 31132189 is about 314.5839438648.

The spelling of 31132189 in words is "thirty-one million, one hundred thirty-two thousand, one hundred eighty-nine".