31869748 has 12 divisors (see below), whose sum is σ = 56824740. Its totient is φ = 15634112.

The previous prime is 31869737. The next prime is 31869749. The reversal of 31869748 is 84796813.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25120144 + 6749604 = 5012^2 + 2598^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31869698 and 31869707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31869749) 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, 74953 + ... + 75376.

It is an arithmetic number, because the mean of its divisors is an integer number (4735395).

Almost surely, 2^31869748 is an apocalyptic number.

It is an amenable number.

31869748 is a deficient number, since it is larger than the sum of its proper divisors (24954992).

31869748 is a wasteful number, since it uses less digits than its factorization.

31869748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150386 (or 150384 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 31869748 is about 5645.3297512191. The cubic root of 31869748 is about 317.0488701205.

The spelling of 31869748 in words is "thirty-one million, eight hundred sixty-nine thousand, seven hundred forty-eight".