520131430 has 64 divisors (see below), whose sum is σ = 1202439168. Its totient is φ = 157449600.

The previous prime is 520131427. The next prime is 520131449. The reversal of 520131430 is 34131025.

It is a junction number, because it is equal to n+sod(n) for n = 520131398 and 520131407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8505 + ... + 33355.

It is an arithmetic number, because the mean of its divisors is an integer number (18788112).

Almost surely, 2^520131430 is an apocalyptic number.

520131430 is an abundant number, since it is smaller than the sum of its proper divisors (682307738).

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

520131430 is a wasteful number, since it uses less digits than its factorization.

520131430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24901.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 520131430 is about 22806.3901132994. The cubic root of 520131430 is about 804.2128952398.

Adding to 520131430 its reverse (34131025), we get a palindrome (554262455).

The spelling of 520131430 in words is "five hundred twenty million, one hundred thirty-one thousand, four hundred thirty".