343781871 has 16 divisors (see below), whose sum is σ = 490349664. Its totient is φ = 213479424.

The previous prime is 343781869. The next prime is 343781873. The reversal of 343781871 is 178187343.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (343781869) and next prime (343781873).

It is not a de Polignac number, because 343781871 - 2¹ = 343781869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343781873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29800 + ... + 39693.

It is an arithmetic number, because the mean of its divisors is an integer number (30646854).

Almost surely, 2^343781871 is an apocalyptic number.

343781871 is a deficient number, since it is larger than the sum of its proper divisors (146567793).

343781871 is a wasteful number, since it uses less digits than its factorization.

343781871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69610.

The product of its digits is 112896, while the sum is 42.

The square root of 343781871 is about 18541.3556947705. The cubic root of 343781871 is about 700.5314813998.

The spelling of 343781871 in words is "three hundred forty-three million, seven hundred eighty-one thousand, eight hundred seventy-one".