352240813 has 4 divisors (see below), whose sum is σ = 352462428. Its totient is φ = 352019200.

The previous prime is 352240807. The next prime is 352240843. The reversal of 352240813 is 318042253.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 318042253 = 863 ⋅368531.

It can be written as a sum of positive squares in 2 ways, for example, as 307055529 + 45185284 = 17523^2 + 6722^2 .

It is a cyclic number.

It is not a de Polignac number, because 352240813 - 2¹⁷ = 352109741 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 (352240843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108406 + ... + 111607.

It is an arithmetic number, because the mean of its divisors is an integer number (88115607).

Almost surely, 2^352240813 is an apocalyptic number.

It is an amenable number.

352240813 is a deficient number, since it is larger than the sum of its proper divisors (221615).

352240813 is a wasteful number, since it uses less digits than its factorization.

352240813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221614.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 352240813 is about 18768.0796300527. The cubic root of 352240813 is about 706.2306443334.

It can be divided in two parts, 352 and 240813, that added together give a triangular number (241165 = T₆₉₄).

The spelling of 352240813 in words is "three hundred fifty-two million, two hundred forty thousand, eight hundred thirteen".