31485246 has 32 divisors (see below), whose sum is σ = 68490240. Its totient is φ = 9591264.

The previous prime is 31485221. The next prime is 31485247. The reversal of 31485246 is 64258413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31485247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6075 + ... + 9993.

It is an arithmetic number, because the mean of its divisors is an integer number (2140320).

Almost surely, 2^31485246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31485246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34245120).

31485246 is an abundant number, since it is smaller than the sum of its proper divisors (37004994).

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

31485246 is a wasteful number, since it uses less digits than its factorization.

31485246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040.

The product of its digits is 23040, while the sum is 33.

The square root of 31485246 is about 5611.1715354282. The cubic root of 31485246 is about 315.7686644738.

The spelling of 31485246 in words is "thirty-one million, four hundred eighty-five thousand, two hundred forty-six".