2197981343 has 2 divisors, whose sum is σ = 2197981344. Its totient is φ = 2197981342.

The previous prime is 2197981333. The next prime is 2197981381. The reversal of 2197981343 is 3431897912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2197981343 - 2⁴ = 2197981327 is a prime.

It is a super-2 number, since 2×2197981343² = 9662243968352167298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2197981333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098990671 + 1098990672.

It is an arithmetic number, because the mean of its divisors is an integer number (1098990672).

Almost surely, 2^2197981343 is an apocalyptic number.

2197981343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2197981343 is an equidigital number, since it uses as much as digits as its factorization.

2197981343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 2197981343 is about 46882.6337037500. The cubic root of 2197981343 is about 1300.1935299650.

The spelling of 2197981343 in words is "two billion, one hundred ninety-seven million, nine hundred eighty-one thousand, three hundred forty-three".