51033100231 has 4 divisors (see below), whose sum is σ = 51116352232. Its totient is φ = 50949848232.

The previous prime is 51033100229. The next prime is 51033100243. The reversal of 51033100231 is 13200133015.

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 51033100231 - 2¹ = 51033100229 is a prime.

It is a super-2 number, since 2×51033100231² (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 = 51033100199 and 51033100208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51033100211) 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, 41625081 + ... + 41626306.

It is an arithmetic number, because the mean of its divisors is an integer number (12779088058).

Almost surely, 2^51033100231 is an apocalyptic number.

51033100231 is a deficient number, since it is larger than the sum of its proper divisors (83252001).

51033100231 is an equidigital number, since it uses as much as digits as its factorization.

51033100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83252000.

The product of its (nonzero) digits is 270, while the sum is 19.

Adding to 51033100231 its reverse (13200133015), we get a palindrome (64233233246).

The spelling of 51033100231 in words is "fifty-one billion, thirty-three million, one hundred thousand, two hundred thirty-one".