346880431 has 4 divisors (see below), whose sum is σ = 348199632. Its totient is φ = 345561232.

The previous prime is 346880407. The next prime is 346880447. The reversal of 346880431 is 134088643.

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

It is a cyclic number.

It is not a de Polignac number, because 346880431 - 2⁵ = 346880399 is a prime.

It is a super-2 number, since 2×346880431² = 240652066821491522, 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 (346880491) 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, 659206 + ... + 659731.

It is an arithmetic number, because the mean of its divisors is an integer number (87049908).

Almost surely, 2^346880431 is an apocalyptic number.

346880431 is a deficient number, since it is larger than the sum of its proper divisors (1319201).

346880431 is a wasteful number, since it uses less digits than its factorization.

346880431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319200.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 346880431 is about 18624.7263335599. The cubic root of 346880431 is about 702.6298563998.

The spelling of 346880431 in words is "three hundred forty-six million, eight hundred eighty thousand, four hundred thirty-one".