346746431 has 4 divisors (see below), whose sum is σ = 347638200. Its totient is φ = 345854664.

The previous prime is 346746391. The next prime is 346746437. The reversal of 346746431 is 134647643.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-346746431 is a prime.

It is a super-2 number, since 2×346746431² = 240466174822475522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346746437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445301 + ... + 446078.

It is an arithmetic number, because the mean of its divisors is an integer number (86909550).

Almost surely, 2^346746431 is an apocalyptic number.

346746431 is a deficient number, since it is larger than the sum of its proper divisors (891769).

346746431 is an equidigital number, since it uses as much as digits as its factorization.

346746431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891768.

The product of its digits is 145152, while the sum is 38.

The square root of 346746431 is about 18621.1286177825. The cubic root of 346746431 is about 702.5393693821.

The spelling of 346746431 in words is "three hundred forty-six million, seven hundred forty-six thousand, four hundred thirty-one".