340431243656 has 32 divisors (see below), whose sum is σ = 736313250240. Its totient is φ = 144535558848.

The previous prime is 340431243643. The next prime is 340431243703. The reversal of 340431243656 is 656342134043.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28401155 + ... + 28413138.

It is an arithmetic number, because the mean of its divisors is an integer number (23009789070).

Almost surely, 2^340431243656 is an apocalyptic number.

It is an amenable number.

340431243656 is an abundant number, since it is smaller than the sum of its proper divisors (395882006584).

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

340431243656 is a wasteful number, since it uses less digits than its factorization.

340431243656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56814413 (or 56814409 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 41.

Adding to 340431243656 its reverse (656342134043), we get a palindrome (996773377699).

The spelling of 340431243656 in words is "three hundred forty billion, four hundred thirty-one million, two hundred forty-three thousand, six hundred fifty-six".