312142043111021 has 8 divisors (see below), whose sum is σ = 320607771756384. Its totient is φ = 303677864845200.

The previous prime is 312142043110973. The next prime is 312142043111023. The reversal of 312142043111021 is 120111340241213.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 312142043111021 - 2¹⁰ = 312142043109997 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 (312142043111023) 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, 387186755 + ... + 387992096.

It is an arithmetic number, because the mean of its divisors is an integer number (40075971469548).

Almost surely, 2^{312142043111021} is an apocalyptic number.

It is an amenable number.

312142043111021 is a deficient number, since it is larger than the sum of its proper divisors (8465728645363).

312142043111021 is a wasteful number, since it uses less digits than its factorization.

312142043111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775189771.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 312142043111021 its reverse (120111340241213), we get a palindrome (432253383352234).

The spelling of 312142043111021 in words is "three hundred twelve trillion, one hundred forty-two billion, forty-three million, one hundred eleven thousand, twenty-one".