31053985 has 16 divisors (see below), whose sum is σ = 39851136. Its totient is φ = 23148288.

The previous prime is 31053977. The next prime is 31054021. The reversal of 31053985 is 58935013.

It is not a de Polignac number, because 31053985 - 2³ = 31053977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31053985.

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, 6982 + ... + 10528.

It is an arithmetic number, because the mean of its divisors is an integer number (2490696).

Almost surely, 2^31053985 is an apocalyptic number.

It is an amenable number.

31053985 is a deficient number, since it is larger than the sum of its proper divisors (8797151).

31053985 is a wasteful number, since it uses less digits than its factorization.

31053985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 31053985 is about 5572.6102501431. The cubic root of 31053985 is about 314.3203115691.

Adding to 31053985 its reverse (58935013), we get a palindrome (89988998).

The spelling of 31053985 in words is "thirty-one million, fifty-three thousand, nine hundred eighty-five".