51323001331 has 8 divisors (see below), whose sum is σ = 58656364544. Its totient is φ = 43990014600.

The previous prime is 51323001263. The next prime is 51323001337. The reversal of 51323001331 is 13310032315.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51323001331 - 2⁹ = 51323000819 is a prime.

It is a super-2 number, since 2×51323001331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51323001337) 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 7 ways as a sum of consecutive naturals, for example, 318766 + ... + 451948.

It is an arithmetic number, because the mean of its divisors is an integer number (7332045568).

Almost surely, 2^51323001331 is an apocalyptic number.

51323001331 is a deficient number, since it is larger than the sum of its proper divisors (7333363213).

51323001331 is a wasteful number, since it uses less digits than its factorization.

51323001331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188241.

The product of its (nonzero) digits is 810, while the sum is 22.

Adding to 51323001331 its reverse (13310032315), we get a palindrome (64633033646).

The spelling of 51323001331 in words is "fifty-one billion, three hundred twenty-three million, one thousand, three hundred thirty-one".