346143631 has 4 divisors (see below), whose sum is σ = 346273200. Its totient is φ = 346014064.

The previous prime is 346143617. The next prime is 346143649. The reversal of 346143631 is 136341643.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136341643 = 5051 ⋅26993.

It is a cyclic number.

It is not a de Polignac number, because 346143631 - 2⁷ = 346143503 is a prime.

It is a super-2 number, since 2×346143631² = 239630826563728322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 346143593 and 346143602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346143661) 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, 60691 + ... + 66148.

It is an arithmetic number, because the mean of its divisors is an integer number (86568300).

Almost surely, 2^346143631 is an apocalyptic number.

346143631 is a deficient number, since it is larger than the sum of its proper divisors (129569).

346143631 is a wasteful number, since it uses less digits than its factorization.

346143631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129568.

The product of its digits is 15552, while the sum is 31.

The square root of 346143631 is about 18604.9356623451. The cubic root of 346143631 is about 702.1320242864.

The spelling of 346143631 in words is "three hundred forty-six million, one hundred forty-three thousand, six hundred thirty-one".