31850428 has 6 divisors (see below), whose sum is σ = 55738256. Its totient is φ = 15925212.

The previous prime is 31850419. The next prime is 31850431. The reversal of 31850428 is 82405813.

It is a self number, because there is not a number n which added to its sum of digits gives 31850428.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3981300 + ... + 3981307.

Almost surely, 2^31850428 is an apocalyptic number.

It is an amenable number.

31850428 is a deficient number, since it is larger than the sum of its proper divisors (23887828).

31850428 is a wasteful number, since it uses less digits than its factorization.

31850428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7962611 (or 7962609 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 31850428 is about 5643.6183428719. The cubic root of 31850428 is about 316.9847903087.

The spelling of 31850428 in words is "thirty-one million, eight hundred fifty thousand, four hundred twenty-eight".