916981724231 has 2 divisors, whose sum is σ = 916981724232. Its totient is φ = 916981724230.

The previous prime is 916981724213. The next prime is 916981724287. The reversal of 916981724231 is 132427189619.

Together with previous prime (916981724213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 916981724231 - 2⁶ = 916981724167 is a prime.

It is a super-2 number, since 2×916981724231² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (916981024231) 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, 458490862115 + 458490862116.

It is an arithmetic number, because the mean of its divisors is an integer number (458490862116).

Almost surely, 2^916981724231 is an apocalyptic number.

916981724231 is a deficient number, since it is larger than the sum of its proper divisors (1).

916981724231 is an equidigital number, since it uses as much as digits as its factorization.

916981724231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 53.

The spelling of 916981724231 in words is "nine hundred sixteen billion, nine hundred eighty-one million, seven hundred twenty-four thousand, two hundred thirty-one".