31433003313421 has 2 divisors, whose sum is σ = 31433003313422. Its totient is φ = 31433003313420.

The previous prime is 31433003313377. The next prime is 31433003313443. The reversal of 31433003313421 is 12431330033413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23777433716521 + 7655569596900 = 4876211^2 + 2766870^2 .

It is a cyclic number.

It is not a de Polignac number, because 31433003313421 - 2²¹ = 31433001216269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31433003343421) by changing a digit.

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 as a sum of consecutive naturals, namely, 15716501656710 + 15716501656711.

It is an arithmetic number, because the mean of its divisors is an integer number (15716501656711).

Almost surely, 2^{31433003313421} is an apocalyptic number.

It is an amenable number.

31433003313421 is a deficient number, since it is larger than the sum of its proper divisors (1).

31433003313421 is an equidigital number, since it uses as much as digits as its factorization.

31433003313421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 31433003313421 its reverse (12431330033413), we get a palindrome (43864333346834).

The spelling of 31433003313421 in words is "thirty-one trillion, four hundred thirty-three billion, three million, three hundred thirteen thousand, four hundred twenty-one".