340251221 has 8 divisors (see below), whose sum is σ = 360141600. Its totient is φ = 320559120.

The previous prime is 340251193. The next prime is 340251269. The reversal of 340251221 is 122152043.

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 340251221 - 2⁶ = 340251157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 340251193 and 340251202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340251281) 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, 46031 + ... + 52908.

It is an arithmetic number, because the mean of its divisors is an integer number (45017700).

Almost surely, 2^340251221 is an apocalyptic number.

It is an amenable number.

340251221 is a deficient number, since it is larger than the sum of its proper divisors (19890379).

340251221 is a wasteful number, since it uses less digits than its factorization.

340251221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99139.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 340251221 is about 18445.8998425124. The cubic root of 340251221 is about 698.1250648225.

The spelling of 340251221 in words is "three hundred forty million, two hundred fifty-one thousand, two hundred twenty-one".