349723111 has 4 divisors (see below), whose sum is σ = 349993224. Its totient is φ = 349453000.

The previous prime is 349723109. The next prime is 349723117. The reversal of 349723111 is 111327943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111327943 = 1931 ⋅57653.

It is a cyclic number.

It is not a de Polignac number, because 349723111 - 2¹ = 349723109 is a prime.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349723117) 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, 133105 + ... + 135706.

It is an arithmetic number, because the mean of its divisors is an integer number (87498306).

Almost surely, 2^349723111 is an apocalyptic number.

349723111 is a deficient number, since it is larger than the sum of its proper divisors (270113).

349723111 is a wasteful number, since it uses less digits than its factorization.

349723111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270112.

The product of its digits is 4536, while the sum is 31.

The square root of 349723111 is about 18700.8852998996. The cubic root of 349723111 is about 704.5439842260.

It can be divided in two parts, 34972 and 3111, that added together give a palindrome (38083).

The spelling of 349723111 in words is "three hundred forty-nine million, seven hundred twenty-three thousand, one hundred eleven".