12340310257 has 16 divisors (see below), whose sum is σ = 13800072384. Its totient is φ = 10937248000.

The previous prime is 12340310207. The next prime is 12340310273. The reversal of 12340310257 is 75201304321.

It is a cyclic number.

It is not a de Polignac number, because 12340310257 - 2²³ = 12331921649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12340310207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699813 + ... + 717229.

It is an arithmetic number, because the mean of its divisors is an integer number (862504524).

Almost surely, 2^12340310257 is an apocalyptic number.

It is an amenable number.

12340310257 is a deficient number, since it is larger than the sum of its proper divisors (1459762127).

12340310257 is a wasteful number, since it uses less digits than its factorization.

12340310257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19040.

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 12340310257 its reverse (75201304321), we get a palindrome (87541614578).

The spelling of 12340310257 in words is "twelve billion, three hundred forty million, three hundred ten thousand, two hundred fifty-seven".