31485336 has 64 divisors (see below), whose sum is σ = 82252800. Its totient is φ = 10032000.

The previous prime is 31485319. The next prime is 31485341. The reversal of 31485336 is 63358413.

It is a junction number, because it is equal to n+sod(n) for n = 31485297 and 31485306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74935 + ... + 75353.

It is an arithmetic number, because the mean of its divisors is an integer number (1285200).

Almost surely, 2^31485336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31485336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41126400).

31485336 is an abundant number, since it is smaller than the sum of its proper divisors (50767464).

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

31485336 is a wasteful number, since it uses less digits than its factorization.

31485336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 556 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 31485336 is about 5611.1795551381. The cubic root of 31485336 is about 315.7689653465.

The spelling of 31485336 in words is "thirty-one million, four hundred eighty-five thousand, three hundred thirty-six".