521463131113 has 8 divisors (see below), whose sum is σ = 522444338208. Its totient is φ = 520482561984.

The previous prime is 521463131089. The next prime is 521463131179. The reversal of 521463131113 is 311131364125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521463131113 is a prime.

It is a super-2 number, since 2×521463131113² (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 (521463135113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1492870 + ... + 1808752.

It is an arithmetic number, because the mean of its divisors is an integer number (65305542276).

Almost surely, 2^521463131113 is an apocalyptic number.

It is an amenable number.

521463131113 is a deficient number, since it is larger than the sum of its proper divisors (981207095).

521463131113 is a wasteful number, since it uses less digits than its factorization.

521463131113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318983.

The product of its digits is 6480, while the sum is 31.

Adding to 521463131113 its reverse (311131364125), we get a palindrome (832594495238).

The spelling of 521463131113 in words is "five hundred twenty-one billion, four hundred sixty-three million, one hundred thirty-one thousand, one hundred thirteen".