97131311313149 has 2 divisors, whose sum is σ = 97131311313150. Its totient is φ = 97131311313148.

The previous prime is 97131311313137. The next prime is 97131311313181. The reversal of 97131311313149 is 94131311313179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91320767316100 + 5810543997049 = 9556190^2 + 2410507^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97131311313149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97131311313649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48565655656574 + 48565655656575.

It is an arithmetic number, because the mean of its divisors is an integer number (48565655656575).

Almost surely, 2^{97131311313149} is an apocalyptic number.

It is an amenable number.

97131311313149 is a deficient number, since it is larger than the sum of its proper divisors (1).

97131311313149 is an equidigital number, since it uses as much as digits as its factorization.

97131311313149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 47.

The spelling of 97131311313149 in words is "ninety-seven trillion, one hundred thirty-one billion, three hundred eleven million, three hundred thirteen thousand, one hundred forty-nine".