312440433442 has 16 divisors (see below), whose sum is σ = 496430203680. Its totient is φ = 146971153728.

The previous prime is 312440433439. The next prime is 312440433463. The reversal of 312440433442 is 244334044213.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 312440433398 and 312440433407.

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, 1778592 + ... + 1946347.

It is an arithmetic number, because the mean of its divisors is an integer number (31026887730).

Almost surely, 2^312440433442 is an apocalyptic number.

312440433442 is a deficient number, since it is larger than the sum of its proper divisors (183989770238).

312440433442 is a wasteful number, since it uses less digits than its factorization.

312440433442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3727425.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 312440433442 its reverse (244334044213), we get a palindrome (556774477655).

The spelling of 312440433442 in words is "three hundred twelve billion, four hundred forty million, four hundred thirty-three thousand, four hundred forty-two".