340043431 has 32 divisors (see below), whose sum is σ = 448616448. Its totient is φ = 250335360.

The previous prime is 340043423. The next prime is 340043443. The reversal of 340043431 is 134340043.

It is a cyclic number.

It is not a de Polignac number, because 340043431 - 2³ = 340043423 is a prime.

It is a super-2 number, since 2×340043431² = 231259069932503522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340043471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75246 + ... + 79636.

It is an arithmetic number, because the mean of its divisors is an integer number (14019264).

Almost surely, 2^340043431 is an apocalyptic number.

340043431 is a deficient number, since it is larger than the sum of its proper divisors (108573017).

340043431 is a wasteful number, since it uses less digits than its factorization.

340043431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 340043431 is about 18440.2665653184. The cubic root of 340043431 is about 697.9829218625.

Adding to 340043431 its reverse (134340043), we get a palindrome (474383474).

The spelling of 340043431 in words is "three hundred forty million, forty-three thousand, four hundred thirty-one".