31940834 has 4 divisors (see below), whose sum is σ = 47911254. Its totient is φ = 15970416.

The previous prime is 31940833. The next prime is 31940837. The reversal of 31940834 is 43804913.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16362025 + 15578809 = 4045^2 + 3947^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31940834.

It is not an unprimeable number, because it can be changed into a prime (31940833) 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 as a sum of consecutive naturals, namely, 7985207 + ... + 7985210.

Almost surely, 2^31940834 is an apocalyptic number.

31940834 is a deficient number, since it is larger than the sum of its proper divisors (15970420).

31940834 is a wasteful number, since it uses less digits than its factorization.

31940834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15970419.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 31940834 is about 5651.6222449842. The cubic root of 31940834 is about 317.2844226554.

The spelling of 31940834 in words is "thirty-one million, nine hundred forty thousand, eight hundred thirty-four".