312042315103021 has 4 divisors (see below), whose sum is σ = 312042424431712. Its totient is φ = 312042205774332.

The previous prime is 312042315103003. The next prime is 312042315103061. The reversal of 312042315103021 is 120301513240213.

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 not a de Polignac number, because 312042315103021 - 2⁷ = 312042315102893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312042315103061) 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, 50265081 + ... + 56130766.

It is an arithmetic number, because the mean of its divisors is an integer number (78010606107928).

Almost surely, 2^{312042315103021} is an apocalyptic number.

It is an amenable number.

312042315103021 is a deficient number, since it is larger than the sum of its proper divisors (109328691).

312042315103021 is a wasteful number, since it uses less digits than its factorization.

312042315103021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109328690.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 312042315103021 its reverse (120301513240213), we get a palindrome (432343828343234).

The spelling of 312042315103021 in words is "three hundred twelve trillion, forty-two billion, three hundred fifteen million, one hundred three thousand, twenty-one".