280431134081 has 6 divisors (see below), whose sum is σ = 326215809090. Its totient is φ = 240369543456.

The previous prime is 280431134063. The next prime is 280431134101. The reversal of 280431134081 is 180431134082.

It can be written as a sum of positive squares in only one way, i.e., 279401045056 + 1030089025 = 528584^2 + 32095^2 .

It is a de Polignac number, because none of the positive numbers 2^k-280431134081 is a prime.

It is a super-2 number, since 2×280431134081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (280431134021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2861542136 + ... + 2861542233.

It is an arithmetic number, because the mean of its divisors is an integer number (54369301515).

Almost surely, 2^280431134081 is an apocalyptic number.

It is an amenable number.

280431134081 is a deficient number, since it is larger than the sum of its proper divisors (45784675009).

280431134081 is an equidigital number, since it uses as much as digits as its factorization.

280431134081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723084383 (or 5723084376 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

Subtracting from 280431134081 its reverse (180431134082), we obtain a palindrome (99999999999).

The spelling of 280431134081 in words is "two hundred eighty billion, four hundred thirty-one million, one hundred thirty-four thousand, eighty-one".