312241004021 has 4 divisors (see below), whose sum is σ = 325816699872. Its totient is φ = 298665308172.

The previous prime is 312241003979. The next prime is 312241004039. The reversal of 312241004021 is 120400142213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312241004021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312241003984 and 312241004002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312241004071) 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, 6787847891 + ... + 6787847936.

It is an arithmetic number, because the mean of its divisors is an integer number (81454174968).

Almost surely, 2^312241004021 is an apocalyptic number.

It is an amenable number.

312241004021 is a deficient number, since it is larger than the sum of its proper divisors (13575695851).

312241004021 is a wasteful number, since it uses less digits than its factorization.

312241004021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13575695850.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 312241004021 its reverse (120400142213), we get a palindrome (432641146234).

The spelling of 312241004021 in words is "three hundred twelve billion, two hundred forty-one million, four thousand, twenty-one".