51431440310 has 16 divisors (see below), whose sum is σ = 93748449600. Its totient is φ = 20312163456.

The previous prime is 51431440267. The next prime is 51431440321. The reversal of 51431440310 is 1304413415.

It is a happy number.

It is a super-2 number, since 2×51431440310² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51431440310.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32550755 + ... + 32552334.

It is an arithmetic number, because the mean of its divisors is an integer number (5859278100).

Almost surely, 2^51431440310 is an apocalyptic number.

51431440310 is a deficient number, since it is larger than the sum of its proper divisors (42317009290).

51431440310 is a wasteful number, since it uses less digits than its factorization.

51431440310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65103175.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 51431440310 its reverse (1304413415), we get a palindrome (52735853725).

The spelling of 51431440310 in words is "fifty-one billion, four hundred thirty-one million, four hundred forty thousand, three hundred ten".