31132045 has 16 divisors (see below), whose sum is σ = 42928128. Its totient is φ = 21231360.

The previous prime is 31132039. The next prime is 31132063. The reversal of 31132045 is 54023113.

It is not a de Polignac number, because 31132045 - 2²¹ = 29034893 is a prime.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 4357 + ... + 9013.

It is an arithmetic number, because the mean of its divisors is an integer number (2683008).

Almost surely, 2^31132045 is an apocalyptic number.

31132045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31132045 is a deficient number, since it is larger than the sum of its proper divisors (11796083).

31132045 is a wasteful number, since it uses less digits than its factorization.

31132045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4860.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 31132045 is about 5579.6097533788. The cubic root of 31132045 is about 314.5834588346.

Adding to 31132045 its reverse (54023113), we get a palindrome (85155158).

The spelling of 31132045 in words is "thirty-one million, one hundred thirty-two thousand, forty-five".