51307631133 has 64 divisors (see below), whose sum is σ = 82545868800. Its totient is φ = 27963048960.

The previous prime is 51307631107. The next prime is 51307631143. The reversal of 51307631133 is 33113670315.

51307631133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51307631133 - 2¹⁰ = 51307630109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 51307631094 and 51307631103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51307631143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16501383 + ... + 16504491.

It is an arithmetic number, because the mean of its divisors is an integer number (1289779200).

Almost surely, 2^51307631133 is an apocalyptic number.

It is an amenable number.

51307631133 is a deficient number, since it is larger than the sum of its proper divisors (31238237667).

51307631133 is a wasteful number, since it uses less digits than its factorization.

51307631133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4442.

The product of its (nonzero) digits is 17010, while the sum is 33.

The spelling of 51307631133 in words is "fifty-one billion, three hundred seven million, six hundred thirty-one thousand, one hundred thirty-three".