513312103 has 4 divisors (see below), whose sum is σ = 517230648. Its totient is φ = 509393560.

The previous prime is 513312097. The next prime is 513312119. The reversal of 513312103 is 301213315.

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 513312103 - 2⁵ = 513312071 is a prime.

It is a super-3 number, since 3×513312103³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513312143) 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, 1959076 + ... + 1959337.

It is an arithmetic number, because the mean of its divisors is an integer number (129307662).

Almost surely, 2^513312103 is an apocalyptic number.

513312103 is a deficient number, since it is larger than the sum of its proper divisors (3918545).

513312103 is a wasteful number, since it uses less digits than its factorization.

513312103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3918544.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 513312103 is about 22656.3921002440. The cubic root of 513312103 is about 800.6828040367.

Adding to 513312103 its reverse (301213315), we get a palindrome (814525418).

The spelling of 513312103 in words is "five hundred thirteen million, three hundred twelve thousand, one hundred three".