346945331 has 4 divisors (see below), whose sum is σ = 349677312. Its totient is φ = 344213352.

The previous prime is 346945307. The next prime is 346945343. The reversal of 346945331 is 133549643.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133549643 = 31 ⋅4308053.

It is a cyclic number.

It is not a de Polignac number, because 346945331 - 2¹⁸ = 346683187 is a prime.

It is a super-2 number, since 2×346945331² = 240742125405399122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (346945381) 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, 1365800 + ... + 1366053.

It is an arithmetic number, because the mean of its divisors is an integer number (87419328).

Almost surely, 2^346945331 is an apocalyptic number.

346945331 is a deficient number, since it is larger than the sum of its proper divisors (2731981).

346945331 is a wasteful number, since it uses less digits than its factorization.

346945331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731980.

The product of its digits is 116640, while the sum is 38.

The square root of 346945331 is about 18626.4685595526. The cubic root of 346945331 is about 702.6736734522.

The spelling of 346945331 in words is "three hundred forty-six million, nine hundred forty-five thousand, three hundred thirty-one".