51431152311 has 128 divisors (see below), whose sum is σ = 99559342080. Its totient is φ = 25444108800.

The previous prime is 51431152277. The next prime is 51431152337. The reversal of 51431152311 is 11325113415.

51431152311 is a `hidden beast` number, since 51 + 431 + 152 + 31 + 1 = 666.

It is not a de Polignac number, because 51431152311 - 2⁹ = 51431151799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51431156311) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11521666 + ... + 11526128.

It is an arithmetic number, because the mean of its divisors is an integer number (777807360).

Almost surely, 2^51431152311 is an apocalyptic number.

51431152311 is a deficient number, since it is larger than the sum of its proper divisors (48128189769).

51431152311 is a wasteful number, since it uses less digits than its factorization.

51431152311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4754 (or 4748 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

Adding to 51431152311 its reverse (11325113415), we get a palindrome (62756265726).

The spelling of 51431152311 in words is "fifty-one billion, four hundred thirty-one million, one hundred fifty-two thousand, three hundred eleven".