51042032311 has 4 divisors (see below), whose sum is σ = 51044181400. Its totient is φ = 51039883224.

The previous prime is 51042032287. The next prime is 51042032341. The reversal of 51042032311 is 11323024015.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51042032311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51042032341) 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, 1038516 + ... + 1086553.

It is an arithmetic number, because the mean of its divisors is an integer number (12761045350).

Almost surely, 2^51042032311 is an apocalyptic number.

51042032311 is a deficient number, since it is larger than the sum of its proper divisors (2149089).

51042032311 is a wasteful number, since it uses less digits than its factorization.

51042032311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149088.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 51042032311 its reverse (11323024015), we get a palindrome (62365056326).

The spelling of 51042032311 in words is "fifty-one billion, forty-two million, thirty-two thousand, three hundred eleven".