312443140043 has 4 divisors (see below), whose sum is σ = 312466661208. Its totient is φ = 312419618880.

The previous prime is 312443140033. The next prime is 312443140099. The reversal of 312443140043 is 340041344213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312443140043 - 2⁶ = 312443139979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312443139988 and 312443140015.

It is not an unprimeable number, because it can be changed into a prime (312443140013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11740646 + ... + 11767227.

It is an arithmetic number, because the mean of its divisors is an integer number (78116665302).

Almost surely, 2^312443140043 is an apocalyptic number.

312443140043 is a deficient number, since it is larger than the sum of its proper divisors (23521165).

312443140043 is a wasteful number, since it uses less digits than its factorization.

312443140043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23521164.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 312443140043 its reverse (340041344213), we get a palindrome (652484484256).

The spelling of 312443140043 in words is "three hundred twelve billion, four hundred forty-three million, one hundred forty thousand, forty-three".