340432221 has 8 divisors (see below), whose sum is σ = 456418144. Its totient is φ = 225700560.

The previous prime is 340432217. The next prime is 340432229. The reversal of 340432221 is 122234043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 340432221 - 2² = 340432217 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 (340432229) 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, 312931 + ... + 314016.

It is an arithmetic number, because the mean of its divisors is an integer number (57052268).

Almost surely, 2^340432221 is an apocalyptic number.

It is an amenable number.

340432221 is a deficient number, since it is larger than the sum of its proper divisors (115985923).

340432221 is a wasteful number, since it uses less digits than its factorization.

340432221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627131.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 340432221 is about 18450.8054295741. The cubic root of 340432221 is about 698.2488343877.

Adding to 340432221 its reverse (122234043), we get a palindrome (462666264).

The spelling of 340432221 in words is "three hundred forty million, four hundred thirty-two thousand, two hundred twenty-one".