103931128 has 32 divisors (see below), whose sum is σ = 230392800. Its totient is φ = 43005312.

The previous prime is 103931123. The next prime is 103931131. The reversal of 103931128 is 821139301.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 103931096 and 103931105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103931123) 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, 30375 + ... + 33622.

It is an arithmetic number, because the mean of its divisors is an integer number (7199775).

Almost surely, 2^103931128 is an apocalyptic number.

It is an amenable number.

103931128 is an abundant number, since it is smaller than the sum of its proper divisors (126461672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103931128 is a wasteful number, since it uses less digits than its factorization.

103931128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64039 (or 64035 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 103931128 is about 10194.6617403423. The cubic root of 103931128 is about 470.1631062087.

The spelling of 103931128 in words is "one hundred three million, nine hundred thirty-one thousand, one hundred twenty-eight".