2321520431 has 8 divisors (see below), whose sum is σ = 2334256704. Its totient is φ = 2308808320.

The previous prime is 2321520427. The next prime is 2321520437. The reversal of 2321520431 is 1340251232.

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 2321520431 - 2² = 2321520427 is a prime.

It is a super-2 number, since 2×2321520431² = 10778914223100851522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2321520397 and 2321520406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321520437) 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 7 ways as a sum of consecutive naturals, for example, 206795 + ... + 217731.

It is an arithmetic number, because the mean of its divisors is an integer number (291782088).

Almost surely, 2^2321520431 is an apocalyptic number.

2321520431 is a deficient number, since it is larger than the sum of its proper divisors (12736273).

2321520431 is a wasteful number, since it uses less digits than its factorization.

2321520431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12081.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2321520431 is about 48182.1588453652. The cubic root of 2321520431 is about 1324.1103188061.

Adding to 2321520431 its reverse (1340251232), we get a palindrome (3661771663).

The spelling of 2321520431 in words is "two billion, three hundred twenty-one million, five hundred twenty thousand, four hundred thirty-one".