101139173 has 2 divisors, whose sum is σ = 101139174. Its totient is φ = 101139172.

The previous prime is 101139161. The next prime is 101139179. The reversal of 101139173 is 371931101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57486724 + 43652449 = 7582^2 + 6607^2 .

It is a cyclic number.

It is not a de Polignac number, because 101139173 - 2²⁰ = 100090597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101139179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50569586 + 50569587.

It is an arithmetic number, because the mean of its divisors is an integer number (50569587).

Almost surely, 2^101139173 is an apocalyptic number.

It is an amenable number.

101139173 is a deficient number, since it is larger than the sum of its proper divisors (1).

101139173 is an equidigital number, since it uses as much as digits as its factorization.

101139173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 101139173 is about 10056.7973530344. The cubic root of 101139173 is about 465.9147568909.

The spelling of 101139173 in words is "one hundred one million, one hundred thirty-nine thousand, one hundred seventy-three".