354123003209 has 4 divisors (see below), whose sum is σ = 354559653840. Its totient is φ = 353686352580.

The previous prime is 354123003193. The next prime is 354123003217. The reversal of 354123003209 is 902300321453.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 902300321453 = 9001 ⋅100244453.

It is a cyclic number.

It is not a de Polignac number, because 354123003209 - 2⁴ = 354123003193 is a prime.

It is a super-2 number, since 2×354123003209² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354123003229) 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, 218324099 + ... + 218325720.

It is an arithmetic number, because the mean of its divisors is an integer number (88639913460).

Almost surely, 2^354123003209 is an apocalyptic number.

It is an amenable number.

354123003209 is a deficient number, since it is larger than the sum of its proper divisors (436650631).

354123003209 is an equidigital number, since it uses as much as digits as its factorization.

354123003209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436650630.

The product of its (nonzero) digits is 19440, while the sum is 32.

The spelling of 354123003209 in words is "three hundred fifty-four billion, one hundred twenty-three million, three thousand, two hundred nine".