101030081 has 2 divisors, whose sum is σ = 101030082. Its totient is φ = 101030080.

The previous prime is 101030077. The next prime is 101030093. The reversal of 101030081 is 180030101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99820081 + 1210000 = 9991^2 + 1100^2 .

It is a cyclic number.

It is not a de Polignac number, because 101030081 - 2² = 101030077 is a prime.

It is a super-2 number, since 2×101030081² = 20414154533733122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101030021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50515040 + 50515041.

It is an arithmetic number, because the mean of its divisors is an integer number (50515041).

Almost surely, 2^101030081 is an apocalyptic number.

It is an amenable number.

101030081 is a deficient number, since it is larger than the sum of its proper divisors (1).

101030081 is an equidigital number, since it uses as much as digits as its factorization.

101030081 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 14.

The square root of 101030081 is about 10051.3720953908. The cubic root of 101030081 is about 465.7471796906.

Adding to 101030081 its reverse (180030101), we get a palindrome (281060182).

The spelling of 101030081 in words is "one hundred one million, thirty thousand, eighty-one".