354334131421 has 4 divisors (see below), whose sum is σ = 354345216732. Its totient is φ = 354323046112.

The previous prime is 354334131343. The next prime is 354334131457. The reversal of 354334131421 is 124131433453.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 350363367225 + 3970764196 = 591915^2 + 63014^2 .

It is a cyclic number.

It is not a de Polignac number, because 354334131421 - 2²⁵ = 354300576989 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 (354334131491) 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, 5494570 + ... + 5558683.

It is an arithmetic number, because the mean of its divisors is an integer number (88586304183).

Almost surely, 2^354334131421 is an apocalyptic number.

It is an amenable number.

354334131421 is a deficient number, since it is larger than the sum of its proper divisors (11085311).

354334131421 is a wasteful number, since it uses less digits than its factorization.

354334131421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11085310.

The product of its digits is 51840, while the sum is 34.

Adding to 354334131421 its reverse (124131433453), we get a palindrome (478465564874).

The spelling of 354334131421 in words is "three hundred fifty-four billion, three hundred thirty-four million, one hundred thirty-one thousand, four hundred twenty-one".