100505731939 has 8 divisors (see below), whose sum is σ = 101732218560. Its totient is φ = 99279616296.

The previous prime is 100505731933. The next prime is 100505731981. The reversal of 100505731939 is 939137505001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100505731939 - 2⁹ = 100505731427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100505731895 and 100505731904.

It is not an unprimeable number, because it can be changed into a prime (100505731933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473344 + ... + 651970.

It is an arithmetic number, because the mean of its divisors is an integer number (12716527320).

Almost surely, 2^100505731939 is an apocalyptic number.

100505731939 is a deficient number, since it is larger than the sum of its proper divisors (1226486621).

100505731939 is an equidigital number, since it uses as much as digits as its factorization.

100505731939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185489.

The product of its (nonzero) digits is 127575, while the sum is 43.

The spelling of 100505731939 in words is "one hundred billion, five hundred five million, seven hundred thirty-one thousand, nine hundred thirty-nine".