51431433123 has 32 divisors (see below), whose sum is σ = 83040781824. Its totient is φ = 27640945152.

The previous prime is 51431433101. The next prime is 51431433149. The reversal of 51431433123 is 32133413415.

It is a happy number.

It is not a de Polignac number, because 51431433123 - 2¹⁴ = 51431416739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51431433173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 458961 + ... + 559917.

It is an arithmetic number, because the mean of its divisors is an integer number (2595024432).

Almost surely, 2^51431433123 is an apocalyptic number.

51431433123 is a deficient number, since it is larger than the sum of its proper divisors (31609348701).

51431433123 is a wasteful number, since it uses less digits than its factorization.

51431433123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102411.

The product of its digits is 12960, while the sum is 30.

Adding to 51431433123 its reverse (32133413415), we get a palindrome (83564846538).

The spelling of 51431433123 in words is "fifty-one billion, four hundred thirty-one million, four hundred thirty-three thousand, one hundred twenty-three".