312012443 has 4 divisors (see below), whose sum is σ = 313646208. Its totient is φ = 310378680.

The previous prime is 312012413. The next prime is 312012469. The reversal of 312012443 is 344210213.

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 312012443 - 2⁸ = 312012187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312012403) 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, 816596 + ... + 816977.

It is an arithmetic number, because the mean of its divisors is an integer number (78411552).

Almost surely, 2^312012443 is an apocalyptic number.

312012443 is a deficient number, since it is larger than the sum of its proper divisors (1633765).

312012443 is a wasteful number, since it uses less digits than its factorization.

312012443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633764.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 312012443 is about 17663.8739522224. The cubic root of 312012443 is about 678.2513049026.

Adding to 312012443 its reverse (344210213), we get a palindrome (656222656).

The spelling of 312012443 in words is "three hundred twelve million, twelve thousand, four hundred forty-three".