31433209201 has 2 divisors, whose sum is σ = 31433209202. Its totient is φ = 31433209200.

The previous prime is 31433209177. The next prime is 31433209229. The reversal of 31433209201 is 10290233413.

It is an a-pointer prime, because the next prime (31433209229) can be obtained adding 31433209201 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26693024400 + 4740184801 = 163380^2 + 68849^2 .

It is an emirp because it is prime and its reverse (10290233413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31433209201 - 2⁵ = 31433209169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31433209201.

It is not a weakly prime, because it can be changed into another prime (31433209261) by changing a digit.

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 as a sum of consecutive naturals, namely, 15716604600 + 15716604601.

It is an arithmetic number, because the mean of its divisors is an integer number (15716604601).

Almost surely, 2^31433209201 is an apocalyptic number.

It is an amenable number.

31433209201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31433209201 is an equidigital number, since it uses as much as digits as its factorization.

31433209201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 31433209201 in words is "thirty-one billion, four hundred thirty-three million, two hundred nine thousand, two hundred one".