343423656 has 48 divisors (see below), whose sum is σ = 945365460. Its totient is φ = 112596480.

The previous prime is 343423637. The next prime is 343423657. The reversal of 343423656 is 656324343.

It can be written as a sum of positive squares in 2 ways, for example, as 218744100 + 124679556 = 14790^2 + 11166^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 343423656.

It is not an unprimeable number, because it can be changed into a prime (343423657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34705 + ... + 43488.

Almost surely, 2^343423656 is an apocalyptic number.

343423656 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

343423656 is an abundant number, since it is smaller than the sum of its proper divisors (601941804).

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

343423656 is a wasteful number, since it uses less digits than its factorization.

343423656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78266 (or 78259 counting only the distinct ones).

The product of its digits is 155520, while the sum is 36.

The square root of 343423656 is about 18531.6932847487. The cubic root of 343423656 is about 700.2880827847.

Adding to 343423656 its reverse (656324343), we get a palindrome (999747999).

The spelling of 343423656 in words is "three hundred forty-three million, four hundred twenty-three thousand, six hundred fifty-six".