2320140323021 has 4 divisors (see below), whose sum is σ = 2320325163132. Its totient is φ = 2319955482912.

The previous prime is 2320140323009. The next prime is 2320140323041. The reversal of 2320140323021 is 1203230410232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1957170222121 + 362970100900 = 1398989^2 + 602470^2 .

It is a cyclic number.

It is not a de Polignac number, because 2320140323021 - 2⁶ = 2320140322957 is a prime.

It is a super-2 number, since 2×2320140323021² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2320140323041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92401226 + ... + 92426331.

It is an arithmetic number, because the mean of its divisors is an integer number (580081290783).

Almost surely, 2^{2320140323021} is an apocalyptic number.

It is an amenable number.

2320140323021 is a deficient number, since it is larger than the sum of its proper divisors (184840111).

2320140323021 is a wasteful number, since it uses less digits than its factorization.

2320140323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184840110.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 2320140323021 its reverse (1203230410232), we get a palindrome (3523370733253).

The spelling of 2320140323021 in words is "two trillion, three hundred twenty billion, one hundred forty million, three hundred twenty-three thousand, twenty-one".