340256143 has 4 divisors (see below), whose sum is σ = 342343768. Its totient is φ = 338168520.

The previous prime is 340256141. The next prime is 340256179. The reversal of 340256143 is 341652043.

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 340256143 - 2¹ = 340256141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340256141) 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, 1043568 + ... + 1043893.

It is an arithmetic number, because the mean of its divisors is an integer number (85585942).

Almost surely, 2^340256143 is an apocalyptic number.

340256143 is a deficient number, since it is larger than the sum of its proper divisors (2087625).

340256143 is a wasteful number, since it uses less digits than its factorization.

340256143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087624.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 340256143 is about 18446.0332592132. The cubic root of 340256143 is about 698.1284311146.

The spelling of 340256143 in words is "three hundred forty million, two hundred fifty-six thousand, one hundred forty-three".