520354031 has 4 divisors (see below), whose sum is σ = 520433712. Its totient is φ = 520274352.

The previous prime is 520353997. The next prime is 520354033. The reversal of 520354031 is 130453025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 520354031 - 2¹⁴ = 520337647 is a prime.

It is a super-2 number, since 2×520354031² = 541536635155897922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520353988 and 520354006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520354033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29075 + ... + 43428.

It is an arithmetic number, because the mean of its divisors is an integer number (130108428).

Almost surely, 2^520354031 is an apocalyptic number.

520354031 is a deficient number, since it is larger than the sum of its proper divisors (79681).

520354031 is an equidigital number, since it uses as much as digits as its factorization.

520354031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79680.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 520354031 is about 22811.2698243653. The cubic root of 520354031 is about 804.3276053894.

The spelling of 520354031 in words is "five hundred twenty million, three hundred fifty-four thousand, thirty-one".