2311200197 has 2 divisors, whose sum is σ = 2311200198. Its totient is φ = 2311200196.

The previous prime is 2311200193. The next prime is 2311200233. The reversal of 2311200197 is 7910021132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1972603396 + 338596801 = 44414^2 + 18401^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311200197 - 2² = 2311200193 is a prime.

It is a super-2 number, since 2×2311200197² = 10683292701225677618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311200193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155600098 + 1155600099.

It is an arithmetic number, because the mean of its divisors is an integer number (1155600099).

Almost surely, 2^2311200197 is an apocalyptic number.

It is an amenable number.

2311200197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311200197 is an equidigital number, since it uses as much as digits as its factorization.

2311200197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 2311200197 is about 48074.9435465087. The cubic root of 2311200197 is about 1322.1453094983.

The spelling of 2311200197 in words is "two billion, three hundred eleven million, two hundred thousand, one hundred ninety-seven".