31416644 has 36 divisors (see below), whose sum is σ = 64709820. Its totient is φ = 13305600.

The previous prime is 31416611. The next prime is 31416659. The reversal of 31416644 is 44661413.

It can be written as a sum of positive squares in 2 ways, for example, as 5017600 + 26399044 = 2240^2 + 5138^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16544 + ... + 18344.

It is an arithmetic number, because the mean of its divisors is an integer number (1797495).

Almost surely, 2^31416644 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 31416644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32354910).

31416644 is an abundant number, since it is smaller than the sum of its proper divisors (33293176).

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

31416644 is a wasteful number, since it uses less digits than its factorization.

31416644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908 (or 1899 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 31416644 is about 5605.0552182829. The cubic root of 31416644 is about 315.5391589451.

The spelling of 31416644 in words is "thirty-one million, four hundred sixteen thousand, six hundred forty-four".