51311345302 has 8 divisors (see below), whose sum is σ = 87962306256. Its totient is φ = 21990576552.

The previous prime is 51311345287. The next prime is 51311345333. The reversal of 51311345302 is 20354311315.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1832548033 + ... + 1832548060.

It is an arithmetic number, because the mean of its divisors is an integer number (10995288282).

Almost surely, 2^51311345302 is an apocalyptic number.

51311345302 is a deficient number, since it is larger than the sum of its proper divisors (36650960954).

51311345302 is a wasteful number, since it uses less digits than its factorization.

51311345302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3665096102.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 51311345302 its reverse (20354311315), we get a palindrome (71665656617).

The spelling of 51311345302 in words is "fifty-one billion, three hundred eleven million, three hundred forty-five thousand, three hundred two".