31132130 has 8 divisors (see below), whose sum is σ = 56037852. Its totient is φ = 12452848.

The previous prime is 31132103. The next prime is 31132141. The reversal of 31132130 is 3123113.

It can be written as a sum of positive squares in 2 ways, for example, as 31125241 + 6889 = 5579^2 + 83^2 .

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556597 + ... + 1556616.

Almost surely, 2^31132130 is an apocalyptic number.

31132130 is a deficient number, since it is larger than the sum of its proper divisors (24905722).

31132130 is a wasteful number, since it uses less digits than its factorization.

31132130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113220.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 31132130 is about 5579.6173703938. The cubic root of 31132130 is about 314.5837451373.

Adding to 31132130 its reverse (3123113), we get a palindrome (34255243).

The spelling of 31132130 in words is "thirty-one million, one hundred thirty-two thousand, one hundred thirty".