312340220345 has 16 divisors (see below), whose sum is σ = 376073936640. Its totient is φ = 249029760000.

The previous prime is 312340220333. The next prime is 312340220347. The reversal of 312340220345 is 543022043213.

It is a happy number.

It is not a de Polignac number, because 312340220345 - 2¹⁶ = 312340154809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312340220347) 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, 1759001 + ... + 1928409.

It is an arithmetic number, because the mean of its divisors is an integer number (23504621040).

Almost surely, 2^312340220345 is an apocalyptic number.

It is an amenable number.

312340220345 is a deficient number, since it is larger than the sum of its proper divisors (63733716295).

312340220345 is a wasteful number, since it uses less digits than its factorization.

312340220345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170656.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 312340220345 its reverse (543022043213), we get a palindrome (855362263558).

The spelling of 312340220345 in words is "three hundred twelve billion, three hundred forty million, two hundred twenty thousand, three hundred forty-five".