281482349281 has 16 divisors (see below), whose sum is σ = 323542535680. Its totient is φ = 239884856640.

The previous prime is 281482349261. The next prime is 281482349293. The reversal of 281482349281 is 182943284182.

It is a cyclic number.

It is not a de Polignac number, because 281482349281 - 2⁵ = 281482349249 is a prime.

It is a super-2 number, since 2×281482349281² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (281482349221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6410680 + ... + 6454438.

It is an arithmetic number, because the mean of its divisors is an integer number (20221408480).

Almost surely, 2^281482349281 is an apocalyptic number.

281482349281 is the 306313-rd octagonal number.

It is an amenable number.

281482349281 is a deficient number, since it is larger than the sum of its proper divisors (42060186399).

281482349281 is a wasteful number, since it uses less digits than its factorization.

281482349281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49024.

The product of its digits is 1769472, while the sum is 52.

The spelling of 281482349281 in words is "two hundred eighty-one billion, four hundred eighty-two million, three hundred forty-nine thousand, two hundred eighty-one".