280242223281 has 32 divisors (see below), whose sum is σ = 437417052800. Its totient is φ = 176836271040.

The previous prime is 280242223277. The next prime is 280242223297. The reversal of 280242223281 is 182322242082.

It is not a de Polignac number, because 280242223281 - 2² = 280242223277 is a prime.

It is a super-2 number, since 2×280242223281² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280242223241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328491 + ... + 817551.

It is an arithmetic number, because the mean of its divisors is an integer number (13669282900).

Almost surely, 2^280242223281 is an apocalyptic number.

It is an amenable number.

280242223281 is a deficient number, since it is larger than the sum of its proper divisors (157174829519).

280242223281 is a wasteful number, since it uses less digits than its factorization.

280242223281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490206 (or 490200 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The spelling of 280242223281 in words is "two hundred eighty billion, two hundred forty-two million, two hundred twenty-three thousand, two hundred eighty-one".