2312311021321 has 8 divisors (see below), whose sum is σ = 2642652126144. Its totient is φ = 1981972656240.

The previous prime is 2312311021313. The next prime is 2312311021333. The reversal of 2312311021321 is 1231201132132.

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 2312311021321 - 2³ = 2312311021313 is a prime.

It is a super-2 number, since 2×2312311021321² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2312311021292 and 2312311021301.

It is not an unprimeable number, because it can be changed into a prime (2312311021921) 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, 1657851 + ... + 2715343.

It is an arithmetic number, because the mean of its divisors is an integer number (330331515768).

Almost surely, 2^{2312311021321} is an apocalyptic number.

It is an amenable number.

2312311021321 is a deficient number, since it is larger than the sum of its proper divisors (330341104823).

2312311021321 is a wasteful number, since it uses less digits than its factorization.

2312311021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369871.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2312311021321 its reverse (1231201132132), we get a palindrome (3543512153453).

The spelling of 2312311021321 in words is "two trillion, three hundred twelve billion, three hundred eleven million, twenty-one thousand, three hundred twenty-one".