513112361 has 4 divisors (see below), whose sum is σ = 514297812. Its totient is φ = 511926912.

The previous prime is 513112351. The next prime is 513112363. The reversal of 513112361 is 163211315.

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

It can be written as a sum of positive squares in 2 ways, for example, as 119486761 + 393625600 = 10931^2 + 19840^2 .

It is a cyclic number.

It is not a de Polignac number, because 513112361 - 2¹⁰ = 513111337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513112363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592076 + ... + 592941.

It is an arithmetic number, because the mean of its divisors is an integer number (128574453).

Almost surely, 2^513112361 is an apocalyptic number.

It is an amenable number.

513112361 is a deficient number, since it is larger than the sum of its proper divisors (1185451).

513112361 is a wasteful number, since it uses less digits than its factorization.

513112361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185450.

The product of its digits is 540, while the sum is 23.

The square root of 513112361 is about 22651.9835996762. The cubic root of 513112361 is about 800.5789356284.

Adding to 513112361 its reverse (163211315), we get a palindrome (676323676).

The spelling of 513112361 in words is "five hundred thirteen million, one hundred twelve thousand, three hundred sixty-one".