143243197 has 4 divisors (see below), whose sum is σ = 143277120. Its totient is φ = 143209276.

The previous prime is 143243183. The next prime is 143243201. The reversal of 143243197 is 791342341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 143243197 - 2⁷ = 143243069 is a prime.

It is a super-2 number, since 2×143243197² = 41037226973561618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143243117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9547 + ... + 19432.

It is an arithmetic number, because the mean of its divisors is an integer number (35819280).

Almost surely, 2^143243197 is an apocalyptic number.

It is an amenable number.

143243197 is a deficient number, since it is larger than the sum of its proper divisors (33923).

143243197 is an equidigital number, since it uses as much as digits as its factorization.

143243197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33922.

The product of its digits is 18144, while the sum is 34.

The square root of 143243197 is about 11968.4250008094. The cubic root of 143243197 is about 523.2284317397.

The spelling of 143243197 in words is "one hundred forty-three million, two hundred forty-three thousand, one hundred ninety-seven".