103130520 has 64 divisors (see below), whose sum is σ = 310093920. Its totient is φ = 27439104.

The previous prime is 103130519. The next prime is 103130543. The reversal of 103130520 is 25031301.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 103130520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80122 + ... + 81398.

Almost surely, 2^103130520 is an apocalyptic number.

103130520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103130520 is an abundant number, since it is smaller than the sum of its proper divisors (206963400).

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

103130520 is a wasteful number, since it uses less digits than its factorization.

103130520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964 (or 1960 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 103130520 is about 10155.3197881701. The cubic root of 103130520 is about 468.9527307967.

Adding to 103130520 its reverse (25031301), we get a palindrome (128161821).

The spelling of 103130520 in words is "one hundred three million, one hundred thirty thousand, five hundred twenty".