312121323001 has 4 divisors (see below), whose sum is σ = 312122884752. Its totient is φ = 312119761252.

The previous prime is 312121322987. The next prime is 312121323013. The reversal of 312121323001 is 100323121213.

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 312121323001 - 2¹⁵ = 312121290233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312121323001.

It is not an unprimeable number, because it can be changed into a prime (312121320001) 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, 427915 + ... + 898528.

It is an arithmetic number, because the mean of its divisors is an integer number (78030721188).

Almost surely, 2^312121323001 is an apocalyptic number.

It is an amenable number.

312121323001 is a deficient number, since it is larger than the sum of its proper divisors (1561751).

312121323001 is a wasteful number, since it uses less digits than its factorization.

312121323001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561750.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 312121323001 its reverse (100323121213), we get a palindrome (412444444214).

The spelling of 312121323001 in words is "three hundred twelve billion, one hundred twenty-one million, three hundred twenty-three thousand, one".