520031 has 2 divisors, whose sum is σ = 520032. Its totient is φ = 520030.

The previous prime is 520021. The next prime is 520043. The reversal of 520031 is 130025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520031 - 2¹⁴ = 503647 is a prime.

It is a super-2 number, since 2×520031² = 540864481922, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 519994 and 520021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260015 + 260016.

It is an arithmetic number, because the mean of its divisors is an integer number (260016).

2⁵²⁰⁰³¹ is an apocalyptic number.

520031 is the 323-rd centered decagonal number.

520031 is a deficient number, since it is larger than the sum of its proper divisors (1).

520031 is an equidigital number, since it uses as much as digits as its factorization.

520031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 520031 is about 721.1317494051. The cubic root of 520031 is about 80.4161131208.

Adding to 520031 its reverse (130025), we get a palindrome (650056).

The spelling of 520031 in words is "five hundred twenty thousand, thirty-one".