31317934 has 4 divisors (see below), whose sum is σ = 46976904. Its totient is φ = 15658966.

The previous prime is 31317931. The next prime is 31317953. The reversal of 31317934 is 43971313.

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

It is a junction number, because it is equal to n+sod(n) for n = 31317896 and 31317905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31317931) by changing a digit.

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, 7829482 + ... + 7829485.

It is an arithmetic number, because the mean of its divisors is an integer number (11744226).

Almost surely, 2^31317934 is an apocalyptic number.

31317934 is a deficient number, since it is larger than the sum of its proper divisors (15658970).

31317934 is a wasteful number, since it uses less digits than its factorization.

31317934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15658969.

The product of its digits is 6804, while the sum is 31.

The square root of 31317934 is about 5596.2428467678. The cubic root of 31317934 is about 315.2083412185.

The spelling of 31317934 in words is "thirty-one million, three hundred seventeen thousand, nine hundred thirty-four".