340831220 has 24 divisors (see below), whose sum is σ = 716277408. Its totient is φ = 136231200.

The previous prime is 340831219. The next prime is 340831261. The reversal of 340831220 is 22138043.

340831220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25055 + ... + 36185.

It is an arithmetic number, because the mean of its divisors is an integer number (29844892).

Almost surely, 2^340831220 is an apocalyptic number.

It is an amenable number.

340831220 is an abundant number, since it is smaller than the sum of its proper divisors (375446188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340831220 is a wasteful number, since it uses less digits than its factorization.

340831220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12671 (or 12669 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 340831220 is about 18461.6147722782. The cubic root of 340831220 is about 698.5215189311.

Adding to 340831220 its reverse (22138043), we get a palindrome (362969263).

The spelling of 340831220 in words is "three hundred forty million, eight hundred thirty-one thousand, two hundred twenty".