340343121 has 16 divisors (see below), whose sum is σ = 483600384. Its totient is φ = 212410704.

The previous prime is 340343119. The next prime is 340343123. The reversal of 340343121 is 121343043.

It is an interprime number because it is at equal distance from previous prime (340343119) and next prime (340343123).

It is not a de Polignac number, because 340343121 - 2¹ = 340343119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (340343123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49231 + ... + 55716.

It is an arithmetic number, because the mean of its divisors is an integer number (30225024).

Almost surely, 2^340343121 is an apocalyptic number.

It is an amenable number.

340343121 is a deficient number, since it is larger than the sum of its proper divisors (143257263).

340343121 is a wasteful number, since it uses less digits than its factorization.

340343121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105020.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 340343121 is about 18448.3907428263. The cubic root of 340343121 is about 698.1879124227.

Adding to 340343121 its reverse (121343043), we get a palindrome (461686164).

The spelling of 340343121 in words is "three hundred forty million, three hundred forty-three thousand, one hundred twenty-one".