101019047 has 2 divisors, whose sum is σ = 101019048. Its totient is φ = 101019046.

The previous prime is 101019043. The next prime is 101019101. The reversal of 101019047 is 740910101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101019047 - 2² = 101019043 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101019043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50509523 + 50509524.

It is an arithmetic number, because the mean of its divisors is an integer number (50509524).

Almost surely, 2^101019047 is an apocalyptic number.

101019047 is a deficient number, since it is larger than the sum of its proper divisors (1).

101019047 is an equidigital number, since it uses as much as digits as its factorization.

101019047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 101019047 is about 10050.8232001165. The cubic root of 101019047 is about 465.7302235476.

Adding to 101019047 its reverse (740910101), we get a palindrome (841929148).

The spelling of 101019047 in words is "one hundred one million, nineteen thousand, forty-seven".