340231220 has 24 divisors (see below), whose sum is σ = 816555264. Its totient is φ = 116650656.

The previous prime is 340231187. The next prime is 340231223. The reversal of 340231220 is 22132043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340231223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214972 + ... + 1215251.

It is an arithmetic number, because the mean of its divisors is an integer number (34023136).

Almost surely, 2^340231220 is an apocalyptic number.

It is an amenable number.

340231220 is an abundant number, since it is smaller than the sum of its proper divisors (476324044).

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

340231220 is a wasteful number, since it uses less digits than its factorization.

340231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430239 (or 2430237 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 340231220 is about 18445.3576815414. The cubic root of 340231220 is about 698.1113852507. Note that the first 3 decimals are identical.

Adding to 340231220 its reverse (22132043), we get a palindrome (362363263).

The spelling of 340231220 in words is "three hundred forty million, two hundred thirty-one thousand, two hundred twenty".