31936 has 14 divisors (see below), whose sum is σ = 63500. Its totient is φ = 15936.

The previous prime is 31907. The next prime is 31957. The reversal of 31936 is 63913.

It is a nialpdrome in base 8.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186 + ... + 313.

2³¹⁹³⁶ is an apocalyptic number.

It is an amenable number.

31936 is a deficient number, since it is larger than the sum of its proper divisors (31564).

31936 is an equidigital number, since it uses as much as digits as its factorization.

31936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 501 counting only the distinct ones).

The product of its digits is 486, while the sum is 22.

The square root of 31936 is about 178.7064632295. The cubic root of 31936 is about 31.7268415661.

The spelling of 31936 in words is "thirty-one thousand, nine hundred thirty-six".