31443324424 has 8 divisors (see below), whose sum is σ = 58956233310. Its totient is φ = 15721662208.

The previous prime is 31443324373. The next prime is 31443324431. The reversal of 31443324424 is 42442334413.

It can be written as a sum of positive squares in only one way, i.e., 31335372324 + 107952100 = 177018^2 + 10390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 31443324424.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1965207769 + ... + 1965207784.

Almost surely, 2^31443324424 is an apocalyptic number.

It is an amenable number.

31443324424 is a deficient number, since it is larger than the sum of its proper divisors (27512908886).

31443324424 is a wasteful number, since it uses less digits than its factorization.

31443324424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930415559 (or 3930415555 counting only the distinct ones).

The product of its digits is 110592, while the sum is 34.

Adding to 31443324424 its reverse (42442334413), we get a palindrome (73885658837).

The spelling of 31443324424 in words is "thirty-one billion, four hundred forty-three million, three hundred twenty-four thousand, four hundred twenty-four".