31641016144 has 20 divisors (see below), whose sum is σ = 61307231220. Its totient is φ = 15819795200.

The previous prime is 31641016133. The next prime is 31641016151. The reversal of 31641016144 is 44161014613.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1302343744 + 30338672400 = 36088^2 + 174180^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645162 + ... + 692470.

It is an arithmetic number, because the mean of its divisors is an integer number (3065361561).

Almost surely, 2^31641016144 is an apocalyptic number.

It is an amenable number.

31641016144 is a deficient number, since it is larger than the sum of its proper divisors (29666215076).

31641016144 is a wasteful number, since it uses less digits than its factorization.

31641016144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89118 (or 89112 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 31641016144 in words is "thirty-one billion, six hundred forty-one million, sixteen thousand, one hundred forty-four".