51351431311342 has 16 divisors (see below), whose sum is σ = 77827030756272. Its totient is φ = 25409127110400.

The previous prime is 51351431311249. The next prime is 51351431311351. The reversal of 51351431311342 is 24311313415315.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7229853 + ... + 12448840.

It is an arithmetic number, because the mean of its divisors is an integer number (4864189422267).

Almost surely, 2^{51351431311342} is an apocalyptic number.

51351431311342 is a deficient number, since it is larger than the sum of its proper divisors (26475599444930).

51351431311342 is a wasteful number, since it uses less digits than its factorization.

51351431311342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19692243.

The product of its digits is 64800, while the sum is 37.

Adding to 51351431311342 its reverse (24311313415315), we get a palindrome (75662744726657).

The spelling of 51351431311342 in words is "fifty-one trillion, three hundred fifty-one billion, four hundred thirty-one million, three hundred eleven thousand, three hundred forty-two".