31424132400424 has 8 divisors (see below), whose sum is σ = 58920248250810. Its totient is φ = 15712066200208.

The previous prime is 31424132400359. The next prime is 31424132400431. The reversal of 31424132400424 is 42400423142413.

It can be written as a sum of positive squares in only one way, i.e., 19631900024100 + 11792232376324 = 4430790^2 + 3433982^2 .

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 31424132400424.

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, 1964008275019 + ... + 1964008275034.

Almost surely, 2^{31424132400424} is an apocalyptic number.

It is an amenable number.

31424132400424 is a deficient number, since it is larger than the sum of its proper divisors (27496115850386).

31424132400424 is a wasteful number, since it uses less digits than its factorization.

31424132400424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928016550059 (or 3928016550055 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 31424132400424 its reverse (42400423142413), we get a palindrome (73824555542837).

The spelling of 31424132400424 in words is "thirty-one trillion, four hundred twenty-four billion, one hundred thirty-two million, four hundred thousand, four hundred twenty-four".