31483686 has 48 divisors (see below), whose sum is σ = 69437520. Its totient is φ = 9509760.

The previous prime is 31483663. The next prime is 31483691. The reversal of 31483686 is 68638413.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 61600 + ... + 62108.

It is an arithmetic number, because the mean of its divisors is an integer number (1446615).

Almost surely, 2^31483686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31483686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34718760).

31483686 is an abundant number, since it is smaller than the sum of its proper divisors (37953834).

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

31483686 is a wasteful number, since it uses less digits than its factorization.

31483686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 588 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 31483686 is about 5611.0325253023. The cubic root of 31483686 is about 315.7634492560.

The spelling of 31483686 in words is "thirty-one million, four hundred eighty-three thousand, six hundred eighty-six".