231201020131097 has 2 divisors, whose sum is σ = 231201020131098. Its totient is φ = 231201020131096.

The previous prime is 231201020131007. The next prime is 231201020131141. The reversal of 231201020131097 is 790131020102132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215356329400576 + 15844690730521 = 14675024^2 + 3980539^2 .

It is a cyclic number.

It is not a de Polignac number, because 231201020131097 - 2¹⁸ = 231201019868953 is a prime.

It is not a weakly prime, because it can be changed into another prime (231201020131007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115600510065548 + 115600510065549.

It is an arithmetic number, because the mean of its divisors is an integer number (115600510065549).

Almost surely, 2^{231201020131097} is an apocalyptic number.

It is an amenable number.

231201020131097 is a deficient number, since it is larger than the sum of its proper divisors (1).

231201020131097 is an equidigital number, since it uses as much as digits as its factorization.

231201020131097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 231201020131097 in words is "two hundred thirty-one trillion, two hundred one billion, twenty million, one hundred thirty-one thousand, ninety-seven".