340731430 has 32 divisors (see below), whose sum is σ = 689217984. Its totient is φ = 120337536.

The previous prime is 340731403. The next prime is 340731437. The reversal of 340731430 is 34137043.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 340731395 and 340731404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340731437) 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 15 ways as a sum of consecutive naturals, for example, 53989 + ... + 59968.

It is an arithmetic number, because the mean of its divisors is an integer number (21538062).

Almost surely, 2^340731430 is an apocalyptic number.

340731430 is an abundant number, since it is smaller than the sum of its proper divisors (348486554).

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

340731430 is a wasteful number, since it uses less digits than its factorization.

340731430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114000.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 340731430 is about 18458.9119397650. The cubic root of 340731430 is about 698.4533402527.

Adding to 340731430 its reverse (34137043), we get a palindrome (374868473).

The spelling of 340731430 in words is "three hundred forty million, seven hundred thirty-one thousand, four hundred thirty".