31450016 has 96 divisors (see below), whose sum is σ = 73664640. Its totient is φ = 13077504.

The previous prime is 31449991. The next prime is 31450021. The reversal of 31450016 is 61005413.

It is a self number, because there is not a number n which added to its sum of digits gives 31450016.

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, 181706 + ... + 181878.

It is an arithmetic number, because the mean of its divisors is an integer number (767340).

Almost surely, 2^31450016 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 31450016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36832320).

31450016 is an abundant number, since it is smaller than the sum of its proper divisors (42214624).

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

31450016 is a wasteful number, since it uses less digits than its factorization.

31450016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 31450016 is about 5608.0313836497. The cubic root of 31450016 is about 315.6508454606.

Adding to 31450016 its reverse (61005413), we get a palindrome (92455429).

The spelling of 31450016 in words is "thirty-one million, four hundred fifty thousand, sixteen".