346631021 has 8 divisors (see below), whose sum is σ = 379728000. Its totient is φ = 313798240.

The previous prime is 346630993. The next prime is 346631039. The reversal of 346631021 is 120136643.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 346631021 - 2¹⁴ = 346614637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346631081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63296 + ... + 68553.

It is an arithmetic number, because the mean of its divisors is an integer number (47466000).

Almost surely, 2^346631021 is an apocalyptic number.

It is an amenable number.

346631021 is a deficient number, since it is larger than the sum of its proper divisors (33096979).

346631021 is a wasteful number, since it uses less digits than its factorization.

346631021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132099.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 346631021 is about 18618.0294607136. The cubic root of 346631021 is about 702.4614170626.

Adding to 346631021 its reverse (120136643), we get a palindrome (466767664).

The spelling of 346631021 in words is "three hundred forty-six million, six hundred thirty-one thousand, twenty-one".