2331421513 has 6 divisors (see below), whose sum is σ = 2363801694. Its totient is φ = 2299478976.

The previous prime is 2331421493. The next prime is 2331421517. The reversal of 2331421513 is 3151241332.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1239251209 + 1092170304 = 35203^2 + 33048^2 .

It is not a de Polignac number, because 2331421513 - 2¹³ = 2331413321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2331421517) 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 5 ways as a sum of consecutive naturals, for example, 213420 + ... + 224077.

It is an arithmetic number, because the mean of its divisors is an integer number (393966949).

Almost surely, 2^2331421513 is an apocalyptic number.

It is an amenable number.

2331421513 is a deficient number, since it is larger than the sum of its proper divisors (32380181).

2331421513 is an frugal number, since it uses more digits than its factorization.

2331421513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437643 (or 437570 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 2331421513 is about 48284.7958782058. The cubic root of 2331421513 is about 1325.9900540087.

Adding to 2331421513 its reverse (3151241332), we get a palindrome (5482662845).

The spelling of 2331421513 in words is "two billion, three hundred thirty-one million, four hundred twenty-one thousand, five hundred thirteen".