340423143 has 4 divisors (see below), whose sum is σ = 453897528. Its totient is φ = 226948760.

The previous prime is 340423117. The next prime is 340423169. The reversal of 340423143 is 341324043.

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

It is an interprime number because it is at equal distance from previous prime (340423117) and next prime (340423169).

It is a cyclic number.

It is not a de Polignac number, because 340423143 - 2¹⁰ = 340422119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340421143) 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, 56737188 + ... + 56737193.

It is an arithmetic number, because the mean of its divisors is an integer number (113474382).

Almost surely, 2^340423143 is an apocalyptic number.

340423143 is a deficient number, since it is larger than the sum of its proper divisors (113474385).

340423143 is a wasteful number, since it uses less digits than its factorization.

340423143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113474384.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 340423143 is about 18450.5594224132. The cubic root of 340423143 is about 698.2426278079.

Adding to 340423143 its reverse (341324043), we get a palindrome (681747186).

The spelling of 340423143 in words is "three hundred forty million, four hundred twenty-three thousand, one hundred forty-three".