312121321023 has 8 divisors (see below), whose sum is σ = 427409376688. Its totient is φ = 202457073024.

The previous prime is 312121321013. The next prime is 312121321033. The reversal of 312121321023 is 320123121213.

It is an interprime number because it is at equal distance from previous prime (312121321013) and next prime (312121321033).

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

It is not a de Polignac number, because 312121321023 - 2¹³ = 312121312831 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 (312121321003) 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, 1405951786 + ... + 1405952007.

It is an arithmetic number, because the mean of its divisors is an integer number (53426172086).

Almost surely, 2^312121321023 is an apocalyptic number.

312121321023 is a deficient number, since it is larger than the sum of its proper divisors (115288055665).

312121321023 is a wasteful number, since it uses less digits than its factorization.

312121321023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811903833.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 312121321023 its reverse (320123121213), we get a palindrome (632244442236).

The spelling of 312121321023 in words is "three hundred twelve billion, one hundred twenty-one million, three hundred twenty-one thousand, twenty-three".