1031100197 has 2 divisors, whose sum is σ = 1031100198. Its totient is φ = 1031100196.

The previous prime is 1031100181. The next prime is 1031100233. The reversal of 1031100197 is 7910011301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 683613316 + 347486881 = 26146^2 + 18641^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031100197 - 2⁴ = 1031100181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031100997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515550098 + 515550099.

It is an arithmetic number, because the mean of its divisors is an integer number (515550099).

Almost surely, 2^1031100197 is an apocalyptic number.

It is an amenable number.

1031100197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031100197 is an equidigital number, since it uses as much as digits as its factorization.

1031100197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189, while the sum is 23.

The square root of 1031100197 is about 32110.7489324058. The cubic root of 1031100197 is about 1010.2610823923.

Adding to 1031100197 its reverse (7910011301), we get a palindrome (8941111498).

The spelling of 1031100197 in words is "one billion, thirty-one million, one hundred thousand, one hundred ninety-seven".