312023120021 has 8 divisors (see below), whose sum is σ = 313987293984. Its totient is φ = 310061586960.

The previous prime is 312023119957. The next prime is 312023120029. The reversal of 312023120021 is 120021320213.

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 312023120021 - 2⁶ = 312023119957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312023120029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422915 + ... + 896048.

It is an arithmetic number, because the mean of its divisors is an integer number (39248411748).

Almost surely, 2^312023120021 is an apocalyptic number.

It is an amenable number.

312023120021 is a deficient number, since it is larger than the sum of its proper divisors (1964173963).

312023120021 is a wasteful number, since it uses less digits than its factorization.

312023120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320451.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 312023120021 its reverse (120021320213), we get a palindrome (432044440234).

The spelling of 312023120021 in words is "three hundred twelve billion, twenty-three million, one hundred twenty thousand, twenty-one".