31020320130097 has 2 divisors, whose sum is σ = 31020320130098. Its totient is φ = 31020320130096.

The previous prime is 31020320130083. The next prime is 31020320130161. The reversal of 31020320130097 is 79003102302013.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19671344987121 + 11348975142976 = 4435239^2 + 3368824^2 .

It is an emirp because it is prime and its reverse (79003102302013) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31020320130097 is a prime.

It is not a weakly prime, because it can be changed into another prime (31020320136097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510160065048 + 15510160065049.

It is an arithmetic number, because the mean of its divisors is an integer number (15510160065049).

Almost surely, 2^{31020320130097} is an apocalyptic number.

It is an amenable number.

31020320130097 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020320130097 is an equidigital number, since it uses as much as digits as its factorization.

31020320130097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The spelling of 31020320130097 in words is "thirty-one trillion, twenty billion, three hundred twenty million, one hundred thirty thousand, ninety-seven".