5131312511 has 16 divisors (see below), whose sum is σ = 5581884000. Its totient is φ = 4688938368.

The previous prime is 5131312499. The next prime is 5131312523. The reversal of 5131312511 is 1152131315.

It is an interprime number because it is at equal distance from previous prime (5131312499) and next prime (5131312523).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5131312511 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 (5131312211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 590345 + ... + 598973.

It is an arithmetic number, because the mean of its divisors is an integer number (348867750).

Almost surely, 2^5131312511 is an apocalyptic number.

5131312511 is a deficient number, since it is larger than the sum of its proper divisors (450571489).

5131312511 is a wasteful number, since it uses less digits than its factorization.

5131312511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9098.

The product of its digits is 450, while the sum is 23.

The square root of 5131312511 is about 71633.1802379316. The cubic root of 5131312511 is about 1724.8161967291.

Adding to 5131312511 its reverse (1152131315), we get a palindrome (6283443826).

The spelling of 5131312511 in words is "five billion, one hundred thirty-one million, three hundred twelve thousand, five hundred eleven".