221413230531 has 12 divisors (see below), whose sum is σ = 333724289808. Its totient is φ = 141191045424.

The previous prime is 221413230481. The next prime is 221413230539. The reversal of 221413230531 is 135032314122.

221413230531 is a `hidden beast` number, since 221 + 4 + 132 + 305 + 3 + 1 = 666.

221413230531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221413230531 - 2¹⁰ = 221413229507 is a prime.

It is a super-2 number, since 2×221413230531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221413230495 and 221413230504.

It is not an unprimeable number, because it can be changed into a prime (221413230539) 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 11 ways as a sum of consecutive naturals, for example, 534814360 + ... + 534814773.

It is an arithmetic number, because the mean of its divisors is an integer number (27810357484).

Almost surely, 2^221413230531 is an apocalyptic number.

221413230531 is a deficient number, since it is larger than the sum of its proper divisors (112311059277).

221413230531 is a wasteful number, since it uses less digits than its factorization.

221413230531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069629162 (or 1069629159 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 221413230531 its reverse (135032314122), we get a palindrome (356445544653).

The spelling of 221413230531 in words is "two hundred twenty-one billion, four hundred thirteen million, two hundred thirty thousand, five hundred thirty-one".