312021123403 has 8 divisors (see below), whose sum is σ = 346155946560. Its totient is φ = 278847844680.

The previous prime is 312021123397. The next prime is 312021123439. The reversal of 312021123403 is 304321120213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312021123403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312021127403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240385425 + ... + 240386722.

It is an arithmetic number, because the mean of its divisors is an integer number (43269493320).

Almost surely, 2^312021123403 is an apocalyptic number.

312021123403 is a deficient number, since it is larger than the sum of its proper divisors (34134823157).

312021123403 is a wasteful number, since it uses less digits than its factorization.

312021123403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480772217.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 312021123403 its reverse (304321120213), we get a palindrome (616342243616).

The spelling of 312021123403 in words is "three hundred twelve billion, twenty-one million, one hundred twenty-three thousand, four hundred three".