345140743 has 4 divisors (see below), whose sum is σ = 348491728. Its totient is φ = 341789760.

The previous prime is 345140729. The next prime is 345140767. The reversal of 345140743 is 347041543.

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 345140743 - 2⁵ = 345140711 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 (345140723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1675338 + ... + 1675543.

It is an arithmetic number, because the mean of its divisors is an integer number (87122932).

Almost surely, 2^345140743 is an apocalyptic number.

345140743 is a deficient number, since it is larger than the sum of its proper divisors (3350985).

345140743 is a wasteful number, since it uses less digits than its factorization.

345140743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350984.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 345140743 is about 18577.9639088895. The cubic root of 345140743 is about 701.4532685394.

The spelling of 345140743 in words is "three hundred forty-five million, one hundred forty thousand, seven hundred forty-three".