340431243657 has 8 divisors (see below), whose sum is σ = 454108558176. Its totient is φ = 226854045792.

The previous prime is 340431243643. The next prime is 340431243703. The reversal of 340431243657 is 756342134043.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 340431243657 - 2²² = 340427049353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340431247657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25021228 + ... + 25034829.

It is an arithmetic number, because the mean of its divisors is an integer number (56763569772).

Almost surely, 2^340431243657 is an apocalyptic number.

It is an amenable number.

340431243657 is a deficient number, since it is larger than the sum of its proper divisors (113677314519).

340431243657 is a wasteful number, since it uses less digits than its factorization.

340431243657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50058327.

The product of its (nonzero) digits is 725760, while the sum is 42.

The spelling of 340431243657 in words is "three hundred forty billion, four hundred thirty-one million, two hundred forty-three thousand, six hundred fifty-seven".