5131240511 has 4 divisors (see below), whose sum is σ = 5144037024. Its totient is φ = 5118444000.

The previous prime is 5131240501. The next prime is 5131240519. The reversal of 5131240511 is 1150421315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5131240511 is a prime.

It is a super-2 number, since 2×5131240511² = 52659258363455082242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131240519) 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, 6397655 + ... + 6398456.

It is an arithmetic number, because the mean of its divisors is an integer number (1286009256).

Almost surely, 2^5131240511 is an apocalyptic number.

5131240511 is a deficient number, since it is larger than the sum of its proper divisors (12796513).

5131240511 is a wasteful number, since it uses less digits than its factorization.

5131240511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12796512.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 5131240511 is about 71632.6776757647. The cubic root of 5131240511 is about 1724.8081294398.

Adding to 5131240511 its reverse (1150421315), we get a palindrome (6281661826).

The spelling of 5131240511 in words is "five billion, one hundred thirty-one million, two hundred forty thousand, five hundred eleven".