51134231131 has 4 divisors (see below), whose sum is σ = 51507473832. Its totient is φ = 50760988432.

The previous prime is 51134231119. The next prime is 51134231149. The reversal of 51134231131 is 13113243115.

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

It is a cyclic number.

It is not a de Polignac number, because 51134231131 - 2⁷ = 51134231003 is a prime.

It is a super-2 number, since 2×51134231131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51134231096 and 51134231105.

It is not an unprimeable number, because it can be changed into a prime (51134238131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186621145 + ... + 186621418.

It is an arithmetic number, because the mean of its divisors is an integer number (12876868458).

Almost surely, 2^51134231131 is an apocalyptic number.

51134231131 is a deficient number, since it is larger than the sum of its proper divisors (373242701).

51134231131 is a wasteful number, since it uses less digits than its factorization.

51134231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373242700.

The product of its digits is 1080, while the sum is 25.

Adding to 51134231131 its reverse (13113243115), we get a palindrome (64247474246).

The spelling of 51134231131 in words is "fifty-one billion, one hundred thirty-four million, two hundred thirty-one thousand, one hundred thirty-one".