85335252731 has 2 divisors, whose sum is σ = 85335252732. Its totient is φ = 85335252730.

The previous prime is 85335252727. The next prime is 85335252811. The reversal of 85335252731 is 13725253358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85335252731 - 2² = 85335252727 is a prime.

It is a super-3 number, since 3×85335252731³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (85335212731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42667626365 + 42667626366.

It is an arithmetic number, because the mean of its divisors is an integer number (42667626366).

Almost surely, 2^85335252731 is an apocalyptic number.

85335252731 is a deficient number, since it is larger than the sum of its proper divisors (1).

85335252731 is an equidigital number, since it uses as much as digits as its factorization.

85335252731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756000, while the sum is 44.

The spelling of 85335252731 in words is "eighty-five billion, three hundred thirty-five million, two hundred fifty-two thousand, seven hundred thirty-one".