101587123 has 6 divisors (see below), whose sum is σ = 111662012. Its totient is φ = 92351820.

The previous prime is 101587117. The next prime is 101587141. The reversal of 101587123 is 321785101.

It is not a de Polignac number, because 101587123 - 2¹³ = 101578931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101587091 and 101587100.

It is not an unprimeable number, because it can be changed into a prime (101587183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 419661 + ... + 419902.

Almost surely, 2^101587123 is an apocalyptic number.

101587123 is a deficient number, since it is larger than the sum of its proper divisors (10074889).

101587123 is an equidigital number, since it uses as much as digits as its factorization.

101587123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839585 (or 839574 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 101587123 is about 10079.0437542457. The cubic root of 101587123 is about 466.6015964261.

The spelling of 101587123 in words is "one hundred one million, five hundred eighty-seven thousand, one hundred twenty-three".