340434431 has 8 divisors (see below), whose sum is σ = 356715744. Its totient is φ = 324276480.

The previous prime is 340434383. The next prime is 340434443. The reversal of 340434431 is 134434043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340434431 is a prime.

It is a super-2 number, since 2×340434431² = 231791203620587522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340434431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340434461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25166 + ... + 36251.

It is an arithmetic number, because the mean of its divisors is an integer number (44589468).

Almost surely, 2^340434431 is an apocalyptic number.

340434431 is a deficient number, since it is larger than the sum of its proper divisors (16281313).

340434431 is a wasteful number, since it uses less digits than its factorization.

340434431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61681.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 340434431 is about 18450.8653184614. The cubic root of 340434431 is about 698.2503453362.

Adding to 340434431 its reverse (134434043), we get a palindrome (474868474).

The spelling of 340434431 in words is "three hundred forty million, four hundred thirty-four thousand, four hundred thirty-one".