51130531304131 has 4 divisors (see below), whose sum is σ = 52512437555632. Its totient is φ = 49748625052632.

The previous prime is 51130531304089. The next prime is 51130531304201. The reversal of 51130531304131 is 13140313503115.

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 51130531304131 - 2¹¹ = 51130531302083 is a prime.

It is a super-2 number, since 2×51130531304131² (a number of 28 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 = 51130531304093 and 51130531304102.

It is not an unprimeable number, because it can be changed into a prime (51130531304231) 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, 690953125695 + ... + 690953125768.

It is an arithmetic number, because the mean of its divisors is an integer number (13128109388908).

Almost surely, 2^{51130531304131} is an apocalyptic number.

51130531304131 is a deficient number, since it is larger than the sum of its proper divisors (1381906251501).

51130531304131 is a wasteful number, since it uses less digits than its factorization.

51130531304131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381906251500.

The product of its (nonzero) digits is 8100, while the sum is 31.

Adding to 51130531304131 its reverse (13140313503115), we get a palindrome (64270844807246).

The spelling of 51130531304131 in words is "fifty-one trillion, one hundred thirty billion, five hundred thirty-one million, three hundred four thousand, one hundred thirty-one".