51313123132 has 12 divisors (see below), whose sum is σ = 89802805680. Its totient is φ = 25655178656.

The previous prime is 51313123087. The next prime is 51313123133. The reversal of 51313123132 is 23132131315.

51313123132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×51313123132³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51313123097 and 51313123106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51313123133) 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, 259873 + ... + 412504.

It is an arithmetic number, because the mean of its divisors is an integer number (7483567140).

Almost surely, 2^51313123132 is an apocalyptic number.

It is an amenable number.

51313123132 is a deficient number, since it is larger than the sum of its proper divisors (38489682548).

51313123132 is a wasteful number, since it uses less digits than its factorization.

51313123132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691460 (or 691458 counting only the distinct ones).

The product of its digits is 1620, while the sum is 25.

Adding to 51313123132 its reverse (23132131315), we get a palindrome (74445254447).

The spelling of 51313123132 in words is "fifty-one billion, three hundred thirteen million, one hundred twenty-three thousand, one hundred thirty-two".