31000332102197 has 2 divisors, whose sum is σ = 31000332102198. Its totient is φ = 31000332102196.

The previous prime is 31000332102191. The next prime is 31000332102241. The reversal of 31000332102197 is 79120123300013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28854666695716 + 2145665406481 = 5371654^2 + 1464809^2 .

It is a cyclic number.

It is not a de Polignac number, because 31000332102197 - 2¹² = 31000332098101 is a prime.

It is a super-2 number, since 2×31000332102197² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31000332102191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15500166051098 + 15500166051099.

It is an arithmetic number, because the mean of its divisors is an integer number (15500166051099).

Almost surely, 2^{31000332102197} is an apocalyptic number.

It is an amenable number.

31000332102197 is a deficient number, since it is larger than the sum of its proper divisors (1).

31000332102197 is an equidigital number, since it uses as much as digits as its factorization.

31000332102197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The spelling of 31000332102197 in words is "thirty-one trillion, three hundred thirty-two million, one hundred two thousand, one hundred ninety-seven".