281367965231 has 2 divisors, whose sum is σ = 281367965232. Its totient is φ = 281367965230.

The previous prime is 281367965201. The next prime is 281367965233. The reversal of 281367965231 is 132569763182.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 281367965231 - 2²² = 281363770927 is a prime.

It is a super-2 number, since 2×281367965231² (a number of 24 digits) contains 22 as substring.

Together with 281367965233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281367965233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140683982615 + 140683982616.

It is an arithmetic number, because the mean of its divisors is an integer number (140683982616).

Almost surely, 2^281367965231 is an apocalyptic number.

281367965231 is a deficient number, since it is larger than the sum of its proper divisors (1).

281367965231 is an equidigital number, since it uses as much as digits as its factorization.

281367965231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 53.

The spelling of 281367965231 in words is "two hundred eighty-one billion, three hundred sixty-seven million, nine hundred sixty-five thousand, two hundred thirty-one".