101389247 has 2 divisors, whose sum is σ = 101389248. Its totient is φ = 101389246.

The previous prime is 101389243. The next prime is 101389261. The reversal of 101389247 is 742983101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101389247 - 2² = 101389243 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101389243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50694623 + 50694624.

It is an arithmetic number, because the mean of its divisors is an integer number (50694624).

Almost surely, 2^101389247 is an apocalyptic number.

101389247 is a deficient number, since it is larger than the sum of its proper divisors (1).

101389247 is an equidigital number, since it uses as much as digits as its factorization.

101389247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 101389247 is about 10069.2227604716. Note that the first 3 decimals coincide. The cubic root of 101389247 is about 466.2984436005.

The spelling of 101389247 in words is "one hundred one million, three hundred eighty-nine thousand, two hundred forty-seven".