340323140 has 12 divisors (see below), whose sum is σ = 714678636. Its totient is φ = 136129248.

The previous prime is 340323133. The next prime is 340323143. The reversal of 340323140 is 41323043.

It can be written as a sum of positive squares in 2 ways, for example, as 52070656 + 288252484 = 7216^2 + 16978^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 17016157 = 340323140 / (3 + 4 + 0 + 3 + 2 + 3 + 1 + 4 + 0).

It is not an unprimeable number, because it can be changed into a prime (340323143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8508059 + ... + 8508098.

It is an arithmetic number, because the mean of its divisors is an integer number (59556553).

Almost surely, 2^340323140 is an apocalyptic number.

It is an amenable number.

340323140 is an abundant number, since it is smaller than the sum of its proper divisors (374355496).

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

340323140 is a wasteful number, since it uses less digits than its factorization.

340323140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17016166 (or 17016164 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 340323140 is about 18447.8491971286. The cubic root of 340323140 is about 698.1742489903.

Adding to 340323140 its reverse (41323043), we get a palindrome (381646183).

The spelling of 340323140 in words is "three hundred forty million, three hundred twenty-three thousand, one hundred forty".