513230461131 has 4 divisors (see below), whose sum is σ = 684307281512. Its totient is φ = 342153640752.

The previous prime is 513230461067. The next prime is 513230461151. The reversal of 513230461131 is 131164032315.

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

It is not a de Polignac number, because 513230461131 - 2⁶ = 513230461067 is a prime.

It is a super-2 number, since 2×513230461131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513230461151) 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, 85538410186 + ... + 85538410191.

It is an arithmetic number, because the mean of its divisors is an integer number (171076820378).

Almost surely, 2^513230461131 is an apocalyptic number.

513230461131 is a deficient number, since it is larger than the sum of its proper divisors (171076820381).

513230461131 is a wasteful number, since it uses less digits than its factorization.

513230461131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171076820380.

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 513230461131 its reverse (131164032315), we get a palindrome (644394493446).

The spelling of 513230461131 in words is "five hundred thirteen billion, two hundred thirty million, four hundred sixty-one thousand, one hundred thirty-one".