340538143 has 4 divisors (see below), whose sum is σ = 371496168. Its totient is φ = 309580120.

The previous prime is 340538141. The next prime is 340538189. The reversal of 340538143 is 341835043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 340538143 - 2¹ = 340538141 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340538141) 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, 15478996 + ... + 15479017.

It is an arithmetic number, because the mean of its divisors is an integer number (92874042).

Almost surely, 2^340538143 is an apocalyptic number.

340538143 is a deficient number, since it is larger than the sum of its proper divisors (30958025).

340538143 is a wasteful number, since it uses less digits than its factorization.

340538143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30958024.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 340538143 is about 18453.6755959348. The cubic root of 340538143 is about 698.3212445369.

The spelling of 340538143 in words is "three hundred forty million, five hundred thirty-eight thousand, one hundred forty-three".