51403104323 has 4 divisors (see below), whose sum is σ = 54426816360. Its totient is φ = 48379392288.

The previous prime is 51403104299. The next prime is 51403104349. The reversal of 51403104323 is 32340130415.

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 51403104323 - 2¹² = 51403100227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51403104292 and 51403104301.

It is not an unprimeable number, because it can be changed into a prime (51403104923) 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, 1511855993 + ... + 1511856026.

It is an arithmetic number, because the mean of its divisors is an integer number (13606704090).

Almost surely, 2^51403104323 is an apocalyptic number.

51403104323 is a deficient number, since it is larger than the sum of its proper divisors (3023712037).

51403104323 is a wasteful number, since it uses less digits than its factorization.

51403104323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023712036.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 51403104323 its reverse (32340130415), we get a palindrome (83743234738).

The spelling of 51403104323 in words is "fifty-one billion, four hundred three million, one hundred four thousand, three hundred twenty-three".