102331845081 has 12 divisors (see below), whose sum is σ = 149837497108. Its totient is φ = 67286692224.

The previous prime is 102331845073. The next prime is 102331845097. The reversal of 102331845081 is 180548133201.

102331845081 is a `hidden beast` number, since 102 + 33 + 18 + 4 + 508 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 34711043481 + 67620801600 = 186309^2 + 260040^2 .

It is not a de Polignac number, because 102331845081 - 2³ = 102331845073 is a prime.

It is a super-2 number, since 2×102331845081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102331845071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77877460 + ... + 77878773.

Almost surely, 2^102331845081 is an apocalyptic number.

It is an amenable number.

102331845081 is a deficient number, since it is larger than the sum of its proper divisors (47505652027).

102331845081 is a wasteful number, since it uses less digits than its factorization.

102331845081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155756312 (or 155756309 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

Adding to 102331845081 its reverse (180548133201), we get a palindrome (282879978282).

The spelling of 102331845081 in words is "one hundred two billion, three hundred thirty-one million, eight hundred forty-five thousand, eighty-one".