340131220 has 48 divisors (see below), whose sum is σ = 839155968. Its totient is φ = 114168960.

The previous prime is 340131139. The next prime is 340131229. The reversal of 340131220 is 22131043.

It is a happy number.

340131220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 340131194 and 340131203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340131229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56604 + ... + 62323.

It is an arithmetic number, because the mean of its divisors is an integer number (17482416).

Almost surely, 2^340131220 is an apocalyptic number.

It is an amenable number.

340131220 is an abundant number, since it is smaller than the sum of its proper divisors (499024748).

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

340131220 is a wasteful number, since it uses less digits than its factorization.

340131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118960 (or 118958 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 340131220 is about 18442.6467731722. The cubic root of 340131220 is about 698.0429827692.

Adding to 340131220 its reverse (22131043), we get a palindrome (362262263).

The spelling of 340131220 in words is "three hundred forty million, one hundred thirty-one thousand, two hundred twenty".