101311081 has 2 divisors, whose sum is σ = 101311082. Its totient is φ = 101311080.

The previous prime is 101311073. The next prime is 101311087. The reversal of 101311081 is 180113101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90421081 + 10890000 = 9509^2 + 3300^2 .

It is a cyclic number.

It is not a de Polignac number, because 101311081 - 2³ = 101311073 is a prime.

It is a super-3 number, since 3×101311081³ (a number of 25 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 (101311087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50655540 + 50655541.

It is an arithmetic number, because the mean of its divisors is an integer number (50655541).

Almost surely, 2^101311081 is an apocalyptic number.

It is an amenable number.

101311081 is a deficient number, since it is larger than the sum of its proper divisors (1).

101311081 is an equidigital number, since it uses as much as digits as its factorization.

101311081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

The square root of 101311081 is about 10065.3405804275. The cubic root of 101311081 is about 466.1785819257.

Adding to 101311081 its reverse (180113101), we get a palindrome (281424182).

The spelling of 101311081 in words is "one hundred one million, three hundred eleven thousand, eighty-one".