31713486 has 48 divisors (see below), whose sum is σ = 74241360. Its totient is φ = 9004800.

The previous prime is 31713439. The next prime is 31713491. The reversal of 31713486 is 68431713.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78886 + ... + 79286.

It is an arithmetic number, because the mean of its divisors is an integer number (1546695).

Almost surely, 2^31713486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31713486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37120680).

31713486 is an abundant number, since it is smaller than the sum of its proper divisors (42527874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31713486 is a wasteful number, since it uses less digits than its factorization.

31713486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 682 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 31713486 is about 5631.4728091326. The cubic root of 31713486 is about 316.5298420284.

The spelling of 31713486 in words is "thirty-one million, seven hundred thirteen thousand, four hundred eighty-six".