343131111 has 12 divisors (see below), whose sum is σ = 524788992. Its totient is φ = 215297856.

The previous prime is 343131101. The next prime is 343131119. The reversal of 343131111 is 111131343.

343131111 is a `hidden beast` number, since 343 + 1 + 311 + 11 = 666.

It is not a de Polignac number, because 343131111 - 2¹⁰ = 343130087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343131119) 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 11 ways as a sum of consecutive naturals, for example, 1121191 + ... + 1121496.

It is an arithmetic number, because the mean of its divisors is an integer number (43732416).

Almost surely, 2^343131111 is an apocalyptic number.

343131111 is a deficient number, since it is larger than the sum of its proper divisors (181657881).

343131111 is a wasteful number, since it uses less digits than its factorization.

343131111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242710 (or 2242707 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 343131111 is about 18523.7985035467. The cubic root of 343131111 is about 700.0891797945.

Adding to 343131111 its reverse (111131343), we get a palindrome (454262454).

The spelling of 343131111 in words is "three hundred forty-three million, one hundred thirty-one thousand, one hundred eleven".