101230091 has 2 divisors, whose sum is σ = 101230092. Its totient is φ = 101230090.

The previous prime is 101230079. The next prime is 101230109. The reversal of 101230091 is 190032101.

It is a happy number.

Together with next prime (101230109) 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 101230091 - 2²² = 97035787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101230001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50615045 + 50615046.

It is an arithmetic number, because the mean of its divisors is an integer number (50615046).

Almost surely, 2^101230091 is an apocalyptic number.

101230091 is a deficient number, since it is larger than the sum of its proper divisors (1).

101230091 is an equidigital number, since it uses as much as digits as its factorization.

101230091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 101230091 is about 10061.3165639493. The cubic root of 101230091 is about 466.0543248081.

Adding to 101230091 its reverse (190032101), we get a palindrome (291262192).

The spelling of 101230091 in words is "one hundred one million, two hundred thirty thousand, ninety-one".