331130220312197 has 2 divisors, whose sum is σ = 331130220312198. Its totient is φ = 331130220312196.

The previous prime is 331130220312091. The next prime is 331130220312217. The reversal of 331130220312197 is 791213022031133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328244023660036 + 2886196652161 = 18117506^2 + 1698881^2 .

It is a cyclic number.

It is not a de Polignac number, because 331130220312197 - 2⁴⁰ = 330030708684421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331130220312197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331130220318197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165565110156098 + 165565110156099.

It is an arithmetic number, because the mean of its divisors is an integer number (165565110156099).

Almost surely, 2^{331130220312197} is an apocalyptic number.

It is an amenable number.

331130220312197 is a deficient number, since it is larger than the sum of its proper divisors (1).

331130220312197 is an equidigital number, since it uses as much as digits as its factorization.

331130220312197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The spelling of 331130220312197 in words is "three hundred thirty-one trillion, one hundred thirty billion, two hundred twenty million, three hundred twelve thousand, one hundred ninety-seven".