101387623 has 4 divisors (see below), whose sum is σ = 101459520. Its totient is φ = 101315728.

The previous prime is 101387621. The next prime is 101387647. The reversal of 101387623 is 326783101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326783101 = 43 ⋅7599607.

It is a cyclic number.

It is not a de Polignac number, because 101387623 - 2¹ = 101387621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101387621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33790 + ... + 36667.

It is an arithmetic number, because the mean of its divisors is an integer number (25364880).

Almost surely, 2^101387623 is an apocalyptic number.

101387623 is a deficient number, since it is larger than the sum of its proper divisors (71897).

101387623 is an equidigital number, since it uses as much as digits as its factorization.

101387623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71896.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 101387623 is about 10069.1421183733. The cubic root of 101387623 is about 466.2959539456.

The spelling of 101387623 in words is "one hundred one million, three hundred eighty-seven thousand, six hundred twenty-three".