354315021 has 16 divisors (see below), whose sum is σ = 498878400. Its totient is φ = 223060608.

The previous prime is 354315019. The next prime is 354315047. The reversal of 354315021 is 120513453.

It is not a de Polignac number, because 354315021 - 2¹ = 354315019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 354314982 and 354315000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354315121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8265 + ... + 27873.

It is an arithmetic number, because the mean of its divisors is an integer number (31179900).

Almost surely, 2^354315021 is an apocalyptic number.

It is an amenable number.

354315021 is a deficient number, since it is larger than the sum of its proper divisors (144563379).

354315021 is a wasteful number, since it uses less digits than its factorization.

354315021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19948.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 354315021 is about 18823.2574492302. The cubic root of 354315021 is about 707.6141706231.

Adding to 354315021 its reverse (120513453), we get a palindrome (474828474).

The spelling of 354315021 in words is "three hundred fifty-four million, three hundred fifteen thousand, twenty-one".