103403520 has 416 divisors, whose sum is σ = 424621440. Its totient is φ = 23592960.

The previous prime is 103403483. The next prime is 103403533. The reversal of 103403520 is 25304301.

103403520 is a `hidden beast` number, since 103 + 40 + 3 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 103403493 and 103403502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6082552 + ... + 6082568.

Almost surely, 2^103403520 is an apocalyptic number.

103403520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103403520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212310720).

103403520 is an abundant number, since it is smaller than the sum of its proper divisors (321217920).

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

103403520 is a wasteful number, since it uses less digits than its factorization.

103403520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 103403520 is about 10168.7521358326. The cubic root of 103403520 is about 469.3661593202.

Adding to 103403520 its reverse (25304301), we get a palindrome (128707821).

The spelling of 103403520 in words is "one hundred three million, four hundred three thousand, five hundred twenty".