341405621 has 2 divisors, whose sum is σ = 341405622. Its totient is φ = 341405620.

The previous prime is 341405609. The next prime is 341405693. The reversal of 341405621 is 126504143.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297183121 + 44222500 = 17239^2 + 6650^2 .

It is a cyclic number.

It is not a de Polignac number, because 341405621 - 2¹⁸ = 341143477 is a prime.

It is a super-3 number, since 3×341405621³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (341405521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170702810 + 170702811.

It is an arithmetic number, because the mean of its divisors is an integer number (170702811).

Almost surely, 2^341405621 is an apocalyptic number.

It is an amenable number.

341405621 is a deficient number, since it is larger than the sum of its proper divisors (1).

341405621 is an equidigital number, since it uses as much as digits as its factorization.

341405621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 341405621 is about 18477.1648528664. The cubic root of 341405621 is about 698.9137035360.

Adding to 341405621 its reverse (126504143), we get a palindrome (467909764).

The spelling of 341405621 in words is "three hundred forty-one million, four hundred five thousand, six hundred twenty-one".