354121321 has 8 divisors (see below), whose sum is σ = 362157480. Its totient is φ = 346171392.

The previous prime is 354121307. The next prime is 354121333. The reversal of 354121321 is 123121453.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27415696 + 326705625 = 5236^2 + 18075^2 .

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 354121321 - 2⁵ = 354121289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 354121292 and 354121301.

It is not an unprimeable number, because it can be changed into a prime (354121301) 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, 13216 + ... + 29713.

It is an arithmetic number, because the mean of its divisors is an integer number (45269685).

Almost surely, 2^354121321 is an apocalyptic number.

It is an amenable number.

354121321 is a deficient number, since it is larger than the sum of its proper divisors (8036159).

354121321 is a wasteful number, since it uses less digits than its factorization.

354121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43115.

The product of its digits is 720, while the sum is 22.

The square root of 354121321 is about 18818.1115152398. Note that the first 3 decimals coincide. The cubic root of 354121321 is about 707.4851989062.

Adding to 354121321 its reverse (123121453), we get a palindrome (477242774).

The spelling of 354121321 in words is "three hundred fifty-four million, one hundred twenty-one thousand, three hundred twenty-one".