281226052431 has 24 divisors (see below), whose sum is σ = 406978802256. Its totient is φ = 187131893760.

The previous prime is 281226052427. The next prime is 281226052441. The reversal of 281226052431 is 134250622182.

281226052431 is a `hidden beast` number, since 2 + 8 + 1 + 2 + 2 + 605 + 2 + 43 + 1 = 666.

It is not a de Polignac number, because 281226052431 - 2² = 281226052427 is a prime.

It is a super-2 number, since 2×281226052431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281226052411) 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 23 ways as a sum of consecutive naturals, for example, 25164561 + ... + 25175733.

It is an arithmetic number, because the mean of its divisors is an integer number (16957450094).

Almost surely, 2^281226052431 is an apocalyptic number.

281226052431 is a deficient number, since it is larger than the sum of its proper divisors (125752749825).

281226052431 is a wasteful number, since it uses less digits than its factorization.

281226052431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16183 (or 16180 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 281226052431 in words is "two hundred eighty-one billion, two hundred twenty-six million, fifty-two thousand, four hundred thirty-one".