312440140442 has 16 divisors (see below), whose sum is σ = 493385310240. Its totient is φ = 147980329488.

The previous prime is 312440140433. The next prime is 312440140451. The reversal of 312440140442 is 244041044213.

It is an interprime number because it is at equal distance from previous prime (312440140433) and next prime (312440140451).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163793 + ... + 807284.

It is an arithmetic number, because the mean of its divisors is an integer number (30836581890).

Almost surely, 2^312440140442 is an apocalyptic number.

312440140442 is a deficient number, since it is larger than the sum of its proper divisors (180945169798).

312440140442 is a wasteful number, since it uses less digits than its factorization.

312440140442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979565.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 312440140442 its reverse (244041044213), we get a palindrome (556481184655).

The spelling of 312440140442 in words is "three hundred twelve billion, four hundred forty million, one hundred forty thousand, four hundred forty-two".