513231001 has 2 divisors, whose sum is σ = 513231002. Its totient is φ = 513231000.

The previous prime is 513230941. The next prime is 513231079. The reversal of 513231001 is 100132315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 458987776 + 54243225 = 21424^2 + 7365^2 .

It is a cyclic number.

It is not a de Polignac number, because 513231001 - 2¹¹ = 513228953 is a prime.

It is not a weakly prime, because it can be changed into another prime (513235001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256615500 + 256615501.

It is an arithmetic number, because the mean of its divisors is an integer number (256615501).

Almost surely, 2^513231001 is an apocalyptic number.

It is an amenable number.

513231001 is a deficient number, since it is larger than the sum of its proper divisors (1).

513231001 is an equidigital number, since it uses as much as digits as its factorization.

513231001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 513231001 is about 22654.6022035259. The cubic root of 513231001 is about 800.6406332036.

Adding to 513231001 its reverse (100132315), we get a palindrome (613363316).

The spelling of 513231001 in words is "five hundred thirteen million, two hundred thirty-one thousand, one".