51304143031 has 4 divisors (see below), whose sum is σ = 51306975072. Its totient is φ = 51301310992.

The previous prime is 51304143029. The next prime is 51304143043. The reversal of 51304143031 is 13034140315.

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 51304143031 - 2¹ = 51304143029 is a prime.

It is a super-2 number, since 2×51304143031² (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 = 51304142987 and 51304143005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51304143071) 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, 1388671 + ... + 1425136.

It is an arithmetic number, because the mean of its divisors is an integer number (12826743768).

Almost surely, 2^51304143031 is an apocalyptic number.

51304143031 is a deficient number, since it is larger than the sum of its proper divisors (2832041).

51304143031 is a wasteful number, since it uses less digits than its factorization.

51304143031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832040.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 51304143031 its reverse (13034140315), we get a palindrome (64338283346).

The spelling of 51304143031 in words is "fifty-one billion, three hundred four million, one hundred forty-three thousand, thirty-one".