354512320135243 has 4 divisors (see below), whose sum is σ = 354855507280648. Its totient is φ = 354169132989840.

The previous prime is 354512320135241. The next prime is 354512320135289. The reversal of 354512320135243 is 342531023215453.

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 354512320135243 - 2¹ = 354512320135241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 354512320135243.

It is not an unprimeable number, because it can be changed into a prime (354512320135241) 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, 171593571153 + ... + 171593573218.

It is an arithmetic number, because the mean of its divisors is an integer number (88713876820162).

Almost surely, 2^{354512320135243} is an apocalyptic number.

354512320135243 is a deficient number, since it is larger than the sum of its proper divisors (343187145405).

354512320135243 is a wasteful number, since it uses less digits than its factorization.

354512320135243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343187145404.

The product of its (nonzero) digits is 1296000, while the sum is 43.

The spelling of 354512320135243 in words is "three hundred fifty-four trillion, five hundred twelve billion, three hundred twenty million, one hundred thirty-five thousand, two hundred forty-three".