347520073 has 4 divisors (see below), whose sum is σ = 348062868. Its totient is φ = 346977280.

The previous prime is 347520053. The next prime is 347520083. The reversal of 347520073 is 370025743.

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

It can be written as a sum of positive squares in 2 ways, for example, as 127531849 + 219988224 = 11293^2 + 14832^2 .

It is a cyclic number.

It is not a de Polignac number, because 347520073 - 2⁹ = 347519561 is a prime.

It is a super-2 number, since 2×347520073² = 241540402275850658, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (347520053) 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, 270436 + ... + 271717.

It is an arithmetic number, because the mean of its divisors is an integer number (87015717).

Almost surely, 2^347520073 is an apocalyptic number.

It is an amenable number.

347520073 is a deficient number, since it is larger than the sum of its proper divisors (542795).

347520073 is an equidigital number, since it uses as much as digits as its factorization.

347520073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542794.

The product of its (nonzero) digits is 17640, while the sum is 31.

The square root of 347520073 is about 18641.8902743257. The cubic root of 347520073 is about 703.0614706400.

The spelling of 347520073 in words is "three hundred forty-seven million, five hundred twenty thousand, seventy-three".