6531311446013 has 4 divisors (see below), whose sum is σ = 6560083743360. Its totient is φ = 6502539148668.

The previous prime is 6531311446003. The next prime is 6531311446021. The reversal of 6531311446013 is 3106441131356.

6531311446013 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6531311446013 - 2¹⁰ = 6531311444989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6531311446003) 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, 14386148333 + ... + 14386148786.

It is an arithmetic number, because the mean of its divisors is an integer number (1640020935840).

Almost surely, 2^{6531311446013} is an apocalyptic number.

It is an amenable number.

6531311446013 is a deficient number, since it is larger than the sum of its proper divisors (28772297347).

6531311446013 is a wasteful number, since it uses less digits than its factorization.

6531311446013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28772297346.

The product of its (nonzero) digits is 77760, while the sum is 38.

Adding to 6531311446013 its reverse (3106441131356), we get a palindrome (9637752577369).

The spelling of 6531311446013 in words is "six trillion, five hundred thirty-one billion, three hundred eleven million, four hundred forty-six thousand, thirteen".