31443203404412 has 24 divisors (see below), whose sum is σ = 55995621280032. Its totient is φ = 15445080792000.

The previous prime is 31443203404409. The next prime is 31443203404427. The reversal of 31443203404412 is 21440430234413.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78089339 + ... + 78490962.

It is an arithmetic number, because the mean of its divisors is an integer number (2333150886668).

Almost surely, 2^{31443203404412} is an apocalyptic number.

It is an amenable number.

31443203404412 is a deficient number, since it is larger than the sum of its proper divisors (24552417875620).

31443203404412 is a wasteful number, since it uses less digits than its factorization.

31443203404412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156581189 (or 156581187 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 31443203404412 its reverse (21440430234413), we get a palindrome (52883633638825).

The spelling of 31443203404412 in words is "thirty-one trillion, four hundred forty-three billion, two hundred three million, four hundred four thousand, four hundred twelve".