2197000031 has 2 divisors, whose sum is σ = 2197000032. Its totient is φ = 2197000030.

The previous prime is 2196999971. The next prime is 2197000037. The reversal of 2197000031 is 1300007912.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2197000031 is a prime.

It is a super-2 number, since 2×2197000031² = 9653618272428001922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2196999970 and 2197000006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2197000037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098500015 + 1098500016.

It is an arithmetic number, because the mean of its divisors is an integer number (1098500016).

Almost surely, 2^2197000031 is an apocalyptic number.

2197000031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2197000031 is an equidigital number, since it uses as much as digits as its factorization.

2197000031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 2197000031 is about 46872.1669117185. The cubic root of 2197000031 is about 1300.0000061144. Note that the first 5 decimals are identical.

Adding to 2197000031 its reverse (1300007912), we get a palindrome (3497007943).

The spelling of 2197000031 in words is "two billion, one hundred ninety-seven million, thirty-one", and thus it is an aban number.