51431011011 has 12 divisors (see below), whose sum is σ = 74349997488. Its totient is φ = 34259297904.

The previous prime is 51431010997. The next prime is 51431011039. The reversal of 51431011011 is 11011013415.

51431011011 is a `hidden beast` number, since 514 + 31 + 0 + 110 + 11 = 666.

It is not a de Polignac number, because 51431011011 - 2¹⁴ = 51430994627 is a prime.

It is a super-2 number, since 2×51431011011² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51431011811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2325280 + ... + 2347293.

It is an arithmetic number, because the mean of its divisors is an integer number (6195833124).

Almost surely, 2^51431011011 is an apocalyptic number.

51431011011 is a deficient number, since it is larger than the sum of its proper divisors (22918986477).

51431011011 is a wasteful number, since it uses less digits than its factorization.

51431011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673802 (or 4673799 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

Adding to 51431011011 its reverse (11011013415), we get a palindrome (62442024426).

The spelling of 51431011011 in words is "fifty-one billion, four hundred thirty-one million, eleven thousand, eleven".