345909723 has 8 divisors (see below), whose sum is σ = 461299200. Its totient is φ = 230563368.

The previous prime is 345909671. The next prime is 345909737. The reversal of 345909723 is 327909543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 345909723 - 2²¹ = 343812571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345909023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23658 + ... + 35376.

It is an arithmetic number, because the mean of its divisors is an integer number (57662400).

Almost surely, 2^345909723 is an apocalyptic number.

345909723 is a deficient number, since it is larger than the sum of its proper divisors (115389477).

345909723 is a wasteful number, since it uses less digits than its factorization.

345909723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21561.

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 345909723 is about 18598.6484186352. The cubic root of 345909723 is about 701.9738324350.

The spelling of 345909723 in words is "three hundred forty-five million, nine hundred nine thousand, seven hundred twenty-three".