51132020331 has 12 divisors (see below), whose sum is σ = 79306807272. Its totient is φ = 29218297248.

The previous prime is 51132020273. The next prime is 51132020417. The reversal of 51132020331 is 13302023115.

It is not a de Polignac number, because 51132020331 - 2³⁰ = 50058278507 is a prime.

It is a super-2 number, since 2×51132020331² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 51132020298 and 51132020307.

It is not an unprimeable number, because it can be changed into a prime (51132020831) 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 11 ways as a sum of consecutive naturals, for example, 173918290 + ... + 173918583.

It is an arithmetic number, because the mean of its divisors is an integer number (6608900606).

Almost surely, 2^51132020331 is an apocalyptic number.

51132020331 is a deficient number, since it is larger than the sum of its proper divisors (28174786941).

51132020331 is a wasteful number, since it uses less digits than its factorization.

51132020331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347836890 (or 347836883 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 51132020331 its reverse (13302023115), we get a palindrome (64434043446).

The spelling of 51132020331 in words is "fifty-one billion, one hundred thirty-two million, twenty thousand, three hundred thirty-one".