2531230321 has 8 divisors (see below), whose sum is σ = 2613996288. Its totient is φ = 2448534000.

The previous prime is 2531230313. The next prime is 2531230343. The reversal of 2531230321 is 1230321352.

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 2531230321 - 2³ = 2531230313 is a prime.

It is a Duffinian number.

2531230321 is a modest number, since divided by 230321 gives 2531 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 2531230292 and 2531230301.

It is not an unprimeable number, because it can be changed into a prime (2531230381) 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, 62331 + ... + 94591.

It is an arithmetic number, because the mean of its divisors is an integer number (326749536).

Almost surely, 2^2531230321 is an apocalyptic number.

It is an amenable number.

2531230321 is a deficient number, since it is larger than the sum of its proper divisors (82765967).

2531230321 is a wasteful number, since it uses less digits than its factorization.

2531230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34823.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 2531230321 is about 50311.3339218908. Note that the first 3 decimals coincide. The cubic root of 2531230321 is about 1362.8369128504.

Adding to 2531230321 its reverse (1230321352), we get a palindrome (3761551673).

The spelling of 2531230321 in words is "two billion, five hundred thirty-one million, two hundred thirty thousand, three hundred twenty-one".