101092391 has 2 divisors, whose sum is σ = 101092392. Its totient is φ = 101092390.

The previous prime is 101092373. The next prime is 101092393. The reversal of 101092391 is 193290101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101092391 is a prime.

Together with 101092393, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101092391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101092393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50546195 + 50546196.

It is an arithmetic number, because the mean of its divisors is an integer number (50546196).

Almost surely, 2^101092391 is an apocalyptic number.

101092391 is a deficient number, since it is larger than the sum of its proper divisors (1).

101092391 is an equidigital number, since it uses as much as digits as its factorization.

101092391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 101092391 is about 10054.4711944488. The cubic root of 101092391 is about 465.8429094058.

The spelling of 101092391 in words is "one hundred one million, ninety-two thousand, three hundred ninety-one".