31443442324 has 48 divisors (see below), whose sum is σ = 65697101568. Its totient is φ = 12874929408.

The previous prime is 31443442319. The next prime is 31443442333. The reversal of 31443442324 is 42324434413.

It is a self number, because there is not a number n which added to its sum of digits gives 31443442324.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 536952 + ... + 592624.

It is an arithmetic number, because the mean of its divisors is an integer number (1368689616).

Almost surely, 2^31443442324 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 31443442324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32848550784).

31443442324 is an abundant number, since it is smaller than the sum of its proper divisors (34253659244).

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

31443442324 is a wasteful number, since it uses less digits than its factorization.

31443442324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56584 (or 56582 counting only the distinct ones).

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

Adding to 31443442324 its reverse (42324434413), we get a palindrome (73767876737).

The spelling of 31443442324 in words is "thirty-one billion, four hundred forty-three million, four hundred forty-two thousand, three hundred twenty-four".