51332040031 has 4 divisors (see below), whose sum is σ = 51442908832. Its totient is φ = 51221171232.

The previous prime is 51332040013. The next prime is 51332040047. The reversal of 51332040031 is 13004023315.

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 51332040031 - 2⁵ = 51332039999 is a prime.

It is a super-2 number, since 2×51332040031² (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 = 51332039984 and 51332040011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51332040731) 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, 55433706 + ... + 55434631.

It is an arithmetic number, because the mean of its divisors is an integer number (12860727208).

Almost surely, 2^51332040031 is an apocalyptic number.

51332040031 is a deficient number, since it is larger than the sum of its proper divisors (110868801).

51332040031 is a wasteful number, since it uses less digits than its factorization.

51332040031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110868800.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 51332040031 its reverse (13004023315), we get a palindrome (64336063346).

The spelling of 51332040031 in words is "fifty-one billion, three hundred thirty-two million, forty thousand, thirty-one".