31985063 has 8 divisors (see below), whose sum is σ = 35414400. Its totient is φ = 28642680.

The previous prime is 31985047. The next prime is 31985081. The reversal of 31985063 is 36058913.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31985063 - 2⁴ = 31985047 is a prime.

It is a super-2 number, since 2×31985063² = 2046088510227938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31985263) 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 7 ways as a sum of consecutive naturals, for example, 20963 + ... + 22436.

It is an arithmetic number, because the mean of its divisors is an integer number (4426800).

Almost surely, 2^31985063 is an apocalyptic number.

31985063 is a deficient number, since it is larger than the sum of its proper divisors (3429337).

31985063 is a wasteful number, since it uses less digits than its factorization.

31985063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43477.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 31985063 is about 5655.5338386398. The cubic root of 31985063 is about 317.4308047692.

It can be divided in two parts, 319850 and 63, that added together give a palindrome (319913).

The spelling of 31985063 in words is "thirty-one million, nine hundred eighty-five thousand, sixty-three".