31132043 has 4 divisors (see below), whose sum is σ = 31856088. Its totient is φ = 30408000.

The previous prime is 31132039. The next prime is 31132063. The reversal of 31132043 is 34023113.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34023113 = 181 ⋅187973.

It is a cyclic number.

It is not a de Polignac number, because 31132043 - 2² = 31132039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31132063) 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 3 ways as a sum of consecutive naturals, for example, 361958 + ... + 362043.

It is an arithmetic number, because the mean of its divisors is an integer number (7964022).

Almost surely, 2^31132043 is an apocalyptic number.

31132043 is a deficient number, since it is larger than the sum of its proper divisors (724045).

31132043 is an equidigital number, since it uses as much as digits as its factorization.

31132043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724044.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 31132043 is about 5579.6095741548. The cubic root of 31132043 is about 314.5834520981.

Adding to 31132043 its reverse (34023113), we get a palindrome (65155156).

The spelling of 31132043 in words is "thirty-one million, one hundred thirty-two thousand, forty-three".