51313400531 has 8 divisors (see below), whose sum is σ = 52752311664. Its totient is φ = 49877229600.

The previous prime is 51313400497. The next prime is 51313400561. The reversal of 51313400531 is 13500431315.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51313400531 is a prime.

It is a super-2 number, since 2×51313400531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51313400531.

It is not an unprimeable number, because it can be changed into a prime (51313400561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647045 + ... + 722006.

It is an arithmetic number, because the mean of its divisors is an integer number (6594038958).

Almost surely, 2^51313400531 is an apocalyptic number.

51313400531 is a deficient number, since it is larger than the sum of its proper divisors (1438911133).

51313400531 is a wasteful number, since it uses less digits than its factorization.

51313400531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370101.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 51313400531 its reverse (13500431315), we get a palindrome (64813831846).

The spelling of 51313400531 in words is "fifty-one billion, three hundred thirteen million, four hundred thousand, five hundred thirty-one".