2231120197 has 2 divisors, whose sum is σ = 2231120198. Its totient is φ = 2231120196.

The previous prime is 2231120179. The next prime is 2231120279. The reversal of 2231120197 is 7910211322.

Together with previous prime (2231120179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2230767361 + 352836 = 47231^2 + 594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231120197 is a prime.

It is a super-3 number, since 3×2231120197³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231120147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115560098 + 1115560099.

It is an arithmetic number, because the mean of its divisors is an integer number (1115560099).

Almost surely, 2^2231120197 is an apocalyptic number.

It is an amenable number.

2231120197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231120197 is an equidigital number, since it uses as much as digits as its factorization.

2231120197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 2231120197 is about 47234.7350685912. The cubic root of 2231120197 is about 1306.6952805569.

The spelling of 2231120197 in words is "two billion, two hundred thirty-one million, one hundred twenty thousand, one hundred ninety-seven".