31321103201 has 2 divisors, whose sum is σ = 31321103202. Its totient is φ = 31321103200.

The previous prime is 31321103129. The next prime is 31321103327. The reversal of 31321103201 is 10230112313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31320150625 + 952576 = 176975^2 + 976^2 .

It is a cyclic number.

It is not a de Polignac number, because 31321103201 - 2³⁴ = 14141234017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31321103201.

It is not a weakly prime, because it can be changed into another prime (31321103101) 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, 15660551600 + 15660551601.

It is an arithmetic number, because the mean of its divisors is an integer number (15660551601).

Almost surely, 2^31321103201 is an apocalyptic number.

It is an amenable number.

31321103201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321103201 is an equidigital number, since it uses as much as digits as its factorization.

31321103201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31321103201 its reverse (10230112313), we get a palindrome (41551215514).

The spelling of 31321103201 in words is "thirty-one billion, three hundred twenty-one million, one hundred three thousand, two hundred one".