340821541 has 8 divisors (see below), whose sum is σ = 353435264. Its totient is φ = 328386960.

The previous prime is 340821539. The next prime is 340821587. The reversal of 340821541 is 145128043.

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 340821541 - 2¹ = 340821539 is a prime.

It is a super-2 number, since 2×340821541² = 232318645619229362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340821941) 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, 40905 + ... + 48526.

It is an arithmetic number, because the mean of its divisors is an integer number (44179408).

Almost surely, 2^340821541 is an apocalyptic number.

It is an amenable number.

340821541 is a deficient number, since it is larger than the sum of its proper divisors (12613723).

340821541 is a wasteful number, since it uses less digits than its factorization.

340821541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89571.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 340821541 is about 18461.3526319173. The cubic root of 340821541 is about 698.5149066125.

Adding to 340821541 its reverse (145128043), we get a palindrome (485949584).

The spelling of 340821541 in words is "three hundred forty million, eight hundred twenty-one thousand, five hundred forty-one".