31310120207 has 2 divisors, whose sum is σ = 31310120208. Its totient is φ = 31310120206.

The previous prime is 31310120183. The next prime is 31310120213. The reversal of 31310120207 is 70202101313.

It is a strong prime.

It is an emirp because it is prime and its reverse (70202101313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31310120207 - 2¹⁴ = 31310103823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31310120227) 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, 15655060103 + 15655060104.

It is an arithmetic number, because the mean of its divisors is an integer number (15655060104).

Almost surely, 2^31310120207 is an apocalyptic number.

31310120207 is a deficient number, since it is larger than the sum of its proper divisors (1).

31310120207 is an equidigital number, since it uses as much as digits as its factorization.

31310120207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The spelling of 31310120207 in words is "thirty-one billion, three hundred ten million, one hundred twenty thousand, two hundred seven".