31210001201 has 2 divisors, whose sum is σ = 31210001202. Its totient is φ = 31210001200.

The previous prime is 31210001197. The next prime is 31210001209. The reversal of 31210001201 is 10210001213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31073228176 + 136773025 = 176276^2 + 11695^2 .

It is a cyclic number.

It is not a de Polignac number, because 31210001201 - 2² = 31210001197 is a prime.

It is not a weakly prime, because it can be changed into another prime (31210001209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15605000600 + 15605000601.

It is an arithmetic number, because the mean of its divisors is an integer number (15605000601).

Almost surely, 2^31210001201 is an apocalyptic number.

It is an amenable number.

31210001201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31210001201 is an equidigital number, since it uses as much as digits as its factorization.

31210001201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 31210001201 its product of nonzero digits (12), we get a palindrome (31210001213).

Adding to 31210001201 its reverse (10210001213), we get a palindrome (41420002414).

The spelling of 31210001201 in words is "thirty-one billion, two hundred ten million, one thousand, two hundred one".