2313021121 has 8 divisors (see below), whose sum is σ = 2395258920. Its totient is φ = 2230948608.

The previous prime is 2313021097. The next prime is 2313021143. The reversal of 2313021121 is 1211203132.

It can be written as a sum of positive squares in 4 ways, for example, as 1131380496 + 1181640625 = 33636^2 + 34375^2 .

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 2313021121 - 2⁹ = 2313020609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2313021095 and 2313021104.

It is not an unprimeable number, because it can be changed into a prime (2313021181) 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, 12486 + ... + 69151.

It is an arithmetic number, because the mean of its divisors is an integer number (299407365).

Almost surely, 2^2313021121 is an apocalyptic number.

It is an amenable number.

2313021121 is a deficient number, since it is larger than the sum of its proper divisors (82237799).

2313021121 is an equidigital number, since it uses as much as digits as its factorization.

2313021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82643.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2313021121 is about 48093.8782071066. The cubic root of 2313021121 is about 1322.4924443092.

Adding to 2313021121 its reverse (1211203132), we get a palindrome (3524224253).

The spelling of 2313021121 in words is "two billion, three hundred thirteen million, twenty-one thousand, one hundred twenty-one".