349221017823 has 4 divisors (see below), whose sum is σ = 465628023768. Its totient is φ = 232814011880.

The previous prime is 349221017791. The next prime is 349221017897. The reversal of 349221017823 is 328710122943.

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 349221017823 - 2⁵ = 349221017791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349221017023) 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, 58203502968 + ... + 58203502973.

It is an arithmetic number, because the mean of its divisors is an integer number (116407005942).

Almost surely, 2^349221017823 is an apocalyptic number.

349221017823 is a deficient number, since it is larger than the sum of its proper divisors (116407005945).

349221017823 is a wasteful number, since it uses less digits than its factorization.

349221017823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116407005944.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 349221017823 in words is "three hundred forty-nine billion, two hundred twenty-one million, seventeen thousand, eight hundred twenty-three".