346431 has 8 divisors (see below), whose sum is σ = 474544. Its totient is φ = 224640.

The previous prime is 346429. The next prime is 346433. The reversal of 346431 is 134643.

It is an interprime number because it is at equal distance from previous prime (346429) and next prime (346433).

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

It is not a de Polignac number, because 346431 - 2¹ = 346429 is a prime.

It is a super-2 number, since 2×346431² = 240028875522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 346398 and 346407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450 + ... + 1671.

It is an arithmetic number, because the mean of its divisors is an integer number (59318).

2³⁴⁶⁴³¹ is an apocalyptic number.

346431 is a deficient number, since it is larger than the sum of its proper divisors (128113).

346431 is a wasteful number, since it uses less digits than its factorization.

346431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161.

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

The square root of 346431 is about 588.5838937654. The cubic root of 346431 is about 70.2326274253.

It can be divided in two parts, 346 and 431, that added together give a palindrome (777).

The spelling of 346431 in words is "three hundred forty-six thousand, four hundred thirty-one".