103731520 has 28 divisors (see below), whose sum is σ = 247011444. Its totient is φ = 41492480.

The previous prime is 103731479. The next prime is 103731533. The reversal of 103731520 is 25137301.

It can be written as a sum of positive squares in 2 ways, for example, as 79995136 + 23736384 = 8944^2 + 4872^2 .

It is a junction number, because it is equal to n+sod(n) for n = 103731491 and 103731500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161761 + ... + 162400.

Almost surely, 2^103731520 is an apocalyptic number.

103731520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103731520 is an abundant number, since it is smaller than the sum of its proper divisors (143279924).

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

103731520 is an equidigital number, since it uses as much as digits as its factorization.

103731520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324178 (or 324168 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 103731520 is about 10184.8672058108. The cubic root of 103731520 is about 469.8619180907.

Adding to 103731520 its reverse (25137301), we get a palindrome (128868821).

The spelling of 103731520 in words is "one hundred three million, seven hundred thirty-one thousand, five hundred twenty".