31311310201 has 2 divisors, whose sum is σ = 31311310202. Its totient is φ = 31311310200.

The previous prime is 31311310189. The next prime is 31311310223. The reversal of 31311310201 is 10201311313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30837116025 + 474194176 = 175605^2 + 21776^2 .

It is a cyclic number.

It is not a de Polignac number, because 31311310201 - 2²⁷ = 31177092473 is a prime.

It is not a weakly prime, because it can be changed into another prime (31311310271) by changing a digit.

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, 15655655100 + 15655655101.

It is an arithmetic number, because the mean of its divisors is an integer number (15655655101).

Almost surely, 2^31311310201 is an apocalyptic number.

It is an amenable number.

31311310201 is a deficient number, since it is larger than the sum of its proper divisors (1).

31311310201 is an equidigital number, since it uses as much as digits as its factorization.

31311310201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31311310201 its reverse (10201311313), we get a palindrome (41512621514).

The spelling of 31311310201 in words is "thirty-one billion, three hundred eleven million, three hundred ten thousand, two hundred one".