227823881481 has 135 divisors (see below), whose sum is σ = 409959802343. Its totient is φ = 121885626240.

The previous prime is 227823881471. The next prime is 227823881489. The reversal of 227823881481 is 184188328722.

The square root of 227823881481 is 477309.

It is a perfect power (a square), and thus also a powerful number.

227823881481 is a `hidden beast` number, since 2 + 2 + 7 + 82 + 3 + 8 + 81 + 481 = 666.

It can be written as a sum of positive squares in only one way, i.e., 177371534025 + 50452347456 = 421155^2 + 224616^2 .

It is not a de Polignac number, because 227823881481 - 2⁵ = 227823881449 is a prime.

It is a super-2 number, since 2×227823881481² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (227823881489) 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 134 ways as a sum of consecutive naturals, for example, 1192795096 + ... + 1192795286.

Almost surely, 2^227823881481 is an apocalyptic number.

227823881481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

227823881481 is the 477309-th square number.

227823881481 is the 238655-th centered octagonal number.

It is an amenable number.

227823881481 is a deficient number, since it is larger than the sum of its proper divisors (182135920862).

227823881481 is an frugal number, since it uses more digits than its factorization.

227823881481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 218 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 54.

The spelling of 227823881481 in words is "two hundred twenty-seven billion, eight hundred twenty-three million, eight hundred eighty-one thousand, four hundred eighty-one".