5131112643 has 16 divisors (see below), whose sum is σ = 7778432640. Its totient is φ = 3341188872.

The previous prime is 5131112641. The next prime is 5131112671. The reversal of 5131112643 is 3462111315.

It is a happy number.

5131112643 is a `hidden beast` number, since 5 + 1 + 3 + 1 + 1 + 12 + 643 = 666.

It is not a de Polignac number, because 5131112643 - 2¹ = 5131112641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (5131112641) 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, 2208621 + ... + 2210942.

It is an arithmetic number, because the mean of its divisors is an integer number (486152040).

Almost surely, 2^5131112643 is an apocalyptic number.

5131112643 is a deficient number, since it is larger than the sum of its proper divisors (2647319997).

5131112643 is a wasteful number, since it uses less digits than its factorization.

5131112643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419615 (or 4419609 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 5131112643 is about 71631.7851445851. The cubic root of 5131112643 is about 1724.7938021962.

Adding to 5131112643 its reverse (3462111315), we get a palindrome (8593223958).

The spelling of 5131112643 in words is "five billion, one hundred thirty-one million, one hundred twelve thousand, six hundred forty-three".