231553422122455 has 16 divisors (see below), whose sum is σ = 294235658771040. Its totient is φ = 174330340273152.

The previous prime is 231553422122443. The next prime is 231553422122507. The reversal of 231553422122455 is 554221224355132.

It is a cyclic number.

It is not a de Polignac number, because 231553422122455 - 2¹⁵ = 231553422089687 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122224734 + ... + 124104763.

It is an arithmetic number, because the mean of its divisors is an integer number (18389728673190).

Almost surely, 2^{231553422122455} is an apocalyptic number.

231553422122455 is a deficient number, since it is larger than the sum of its proper divisors (62682236648585).

231553422122455 is a wasteful number, since it uses less digits than its factorization.

231553422122455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246340578.

The product of its digits is 2880000, while the sum is 46.

Adding to 231553422122455 its reverse (554221224355132), we get a palindrome (785774646477587).

The spelling of 231553422122455 in words is "two hundred thirty-one trillion, five hundred fifty-three billion, four hundred twenty-two million, one hundred twenty-two thousand, four hundred fifty-five".