501040313 has 2 divisors, whose sum is σ = 501040314. Its totient is φ = 501040312.

The previous prime is 501040301. The next prime is 501040339. The reversal of 501040313 is 313040105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 456591424 + 44448889 = 21368^2 + 6667^2 .

It is a cyclic number.

It is not a de Polignac number, because 501040313 - 2⁴ = 501040297 is a prime.

It is a super-2 number, since 2×501040313² = 502082790502275938, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 501040291 and 501040300.

It is not a weakly prime, because it can be changed into another prime (501040613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250520156 + 250520157.

It is an arithmetic number, because the mean of its divisors is an integer number (250520157).

Almost surely, 2^501040313 is an apocalyptic number.

It is an amenable number.

501040313 is a deficient number, since it is larger than the sum of its proper divisors (1).

501040313 is an equidigital number, since it uses as much as digits as its factorization.

501040313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 501040313 is about 22383.9297934925. The cubic root of 501040313 is about 794.2506093046.

Adding to 501040313 its reverse (313040105), we get a palindrome (814080418).

The spelling of 501040313 in words is "five hundred one million, forty thousand, three hundred thirteen".