2143197 has 12 divisors (see below), whose sum is σ = 3538080. Its totient is φ = 1224648.

The previous prime is 2143177. The next prime is 2143199. The reversal of 2143197 is 7913412.

It is not a de Polignac number, because 2143197 - 2⁷ = 2143069 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2143197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16947 + ... + 17072.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

2^2143197 is an apocalyptic number.

It is an amenable number.

2143197 is a deficient number, since it is larger than the sum of its proper divisors (1394883).

2143197 is a wasteful number, since it uses less digits than its factorization.

2143197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34032 (or 34029 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 2143197 is about 1463.9661881341. The cubic root of 2143197 is about 128.9300143184.

It can be divided in two parts, 21431 and 97, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 2143197 in words is "two million, one hundred forty-three thousand, one hundred ninety-seven".