31424440312 has 8 divisors (see below), whose sum is σ = 58920825600. Its totient is φ = 15712220152.

The previous prime is 31424440261. The next prime is 31424440331. The reversal of 31424440312 is 21304442413.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1964027512 + ... + 1964027527.

It is an arithmetic number, because the mean of its divisors is an integer number (7365103200).

Almost surely, 2^31424440312 is an apocalyptic number.

It is an amenable number.

31424440312 is a deficient number, since it is larger than the sum of its proper divisors (27496385288).

31424440312 is a wasteful number, since it uses less digits than its factorization.

31424440312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928055045 (or 3928055041 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 31424440312 its reverse (21304442413), we get a palindrome (52728882725).

The spelling of 31424440312 in words is "thirty-one billion, four hundred twenty-four million, four hundred forty thousand, three hundred twelve".