312021123404 has 6 divisors (see below), whose sum is σ = 546036965964. Its totient is φ = 156010561700.

The previous prime is 312021123397. The next prime is 312021123439. The reversal of 312021123404 is 404321120213.

It is a self number, because there is not a number n which added to its sum of digits gives 312021123404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39002640422 + ... + 39002640429.

It is an arithmetic number, because the mean of its divisors is an integer number (91006160994).

Almost surely, 2^312021123404 is an apocalyptic number.

It is an amenable number.

312021123404 is a deficient number, since it is larger than the sum of its proper divisors (234015842560).

312021123404 is a wasteful number, since it uses less digits than its factorization.

312021123404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78005280855 (or 78005280853 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 312021123404 its reverse (404321120213), we get a palindrome (716342243617).

The spelling of 312021123404 in words is "three hundred twelve billion, twenty-one million, one hundred twenty-three thousand, four hundred four".