15231122213 has 16 divisors (see below), whose sum is σ = 15821783040. Its totient is φ = 14646970800.

The previous prime is 15231122197. The next prime is 15231122227. The reversal of 15231122213 is 31222113251.

It is a cyclic number.

It is not a de Polignac number, because 15231122213 - 2⁴ = 15231122197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15231122233) 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 15 ways as a sum of consecutive naturals, for example, 3517856 + ... + 3522182.

It is an arithmetic number, because the mean of its divisors is an integer number (988861440).

Almost surely, 2^15231122213 is an apocalyptic number.

It is an amenable number.

15231122213 is a deficient number, since it is larger than the sum of its proper divisors (590660827).

15231122213 is a wasteful number, since it uses less digits than its factorization.

15231122213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5048.

The product of its digits is 720, while the sum is 23.

Adding to 15231122213 its reverse (31222113251), we get a palindrome (46453235464).

The spelling of 15231122213 in words is "fifteen billion, two hundred thirty-one million, one hundred twenty-two thousand, two hundred thirteen".