6513040231 has 4 divisors (see below), whose sum is σ = 6604773264. Its totient is φ = 6421307200.

The previous prime is 6513040207. The next prime is 6513040253. The reversal of 6513040231 is 1320403156.

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 6513040231 - 2²³ = 6504651623 is a prime.

It is a super-2 number, since 2×6513040231² = 84839386101249066722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6513040196 and 6513040205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6513040531) 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, 45866410 + ... + 45866551.

It is an arithmetic number, because the mean of its divisors is an integer number (1651193316).

Almost surely, 2^6513040231 is an apocalyptic number.

6513040231 is a deficient number, since it is larger than the sum of its proper divisors (91733033).

6513040231 is an equidigital number, since it uses as much as digits as its factorization.

6513040231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91733032.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 6513040231 is about 80703.4090419977. The cubic root of 6513040231 is about 1867.5027654591.

Adding to 6513040231 its reverse (1320403156), we get a palindrome (7833443387).

The spelling of 6513040231 in words is "six billion, five hundred thirteen million, forty thousand, two hundred thirty-one".