346442636321 has 4 divisors (see below), whose sum is σ = 351322110144. Its totient is φ = 341563162500.

The previous prime is 346442636311. The next prime is 346442636327. The reversal of 346442636321 is 123636244643.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 346442636321 - 2⁶ = 346442636257 is a prime.

It is a super-2 number, since 2×346442636321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (346442636327) 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, 2439736805 + ... + 2439736946.

It is an arithmetic number, because the mean of its divisors is an integer number (87830527536).

Almost surely, 2^346442636321 is an apocalyptic number.

It is an amenable number.

346442636321 is a deficient number, since it is larger than the sum of its proper divisors (4879473823).

346442636321 is an equidigital number, since it uses as much as digits as its factorization.

346442636321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4879473822.

The product of its digits is 1492992, while the sum is 44.

The spelling of 346442636321 in words is "three hundred forty-six billion, four hundred forty-two million, six hundred thirty-six thousand, three hundred twenty-one".