345072243 has 16 divisors (see below), whose sum is σ = 505370880. Its totient is φ = 208463904.

The previous prime is 345072223. The next prime is 345072269. The reversal of 345072243 is 342270543.

It is not a de Polignac number, because 345072243 - 2¹³ = 345064051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345072243.

It is not an unprimeable number, because it can be changed into a prime (345072223) 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 15 ways as a sum of consecutive naturals, for example, 130296 + ... + 132917.

It is an arithmetic number, because the mean of its divisors is an integer number (31585680).

Almost surely, 2^345072243 is an apocalyptic number.

345072243 is a deficient number, since it is larger than the sum of its proper divisors (160298637).

345072243 is a wasteful number, since it uses less digits than its factorization.

345072243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263258.

The product of its (nonzero) digits is 20160, while the sum is 30.

The square root of 345072243 is about 18576.1202353990. The cubic root of 345072243 is about 701.4068597153.

The spelling of 345072243 in words is "three hundred forty-five million, seventy-two thousand, two hundred forty-three".