31271042 has 16 divisors (see below), whose sum is σ = 51256800. Its totient is φ = 14190240.

The previous prime is 31271039. The next prime is 31271047. The reversal of 31271042 is 24017213.

It is not an unprimeable number, because it can be changed into a prime (31271047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24209 + ... + 25467.

It is an arithmetic number, because the mean of its divisors is an integer number (3203550).

Almost surely, 2^31271042 is an apocalyptic number.

31271042 is a deficient number, since it is larger than the sum of its proper divisors (19985758).

31271042 is a wasteful number, since it uses less digits than its factorization.

31271042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 31271042 is about 5592.0516807340. The cubic root of 31271042 is about 315.0509433019.

Adding to 31271042 its reverse (24017213), we get a palindrome (55288255).

The spelling of 31271042 in words is "thirty-one million, two hundred seventy-one thousand, forty-two".