230621312505 has 16 divisors (see below), whose sum is σ = 369311405760. Its totient is φ = 122892264768.

The previous prime is 230621312423. The next prime is 230621312513. The reversal of 230621312505 is 505213126032.

It is not a de Polignac number, because 230621312505 - 2¹² = 230621308409 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6592510 + ... + 6627399.

It is an arithmetic number, because the mean of its divisors is an integer number (23081962860).

Almost surely, 2^230621312505 is an apocalyptic number.

It is an amenable number.

230621312505 is a deficient number, since it is larger than the sum of its proper divisors (138690093255).

230621312505 is a wasteful number, since it uses less digits than its factorization.

230621312505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13221080.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 230621312505 its reverse (505213126032), we get a palindrome (735834438537).

The spelling of 230621312505 in words is "two hundred thirty billion, six hundred twenty-one million, three hundred twelve thousand, five hundred five".