51235134433431 has 16 divisors (see below), whose sum is σ = 73587959232480. Its totient is φ = 31520930181120.

The previous prime is 51235134433421. The next prime is 51235134433463. The reversal of 51235134433431 is 13433443153215.

It is not a de Polignac number, because 51235134433431 - 2⁹ = 51235134432919 is a prime.

It is a super-2 number, since 2×51235134433431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51235134433421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174503866 + ... + 174797223.

It is an arithmetic number, because the mean of its divisors is an integer number (4599247452030).

Almost surely, 2^{51235134433431} is an apocalyptic number.

51235134433431 is a deficient number, since it is larger than the sum of its proper divisors (22352824799049).

51235134433431 is a wasteful number, since it uses less digits than its factorization.

51235134433431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349304866.

The product of its digits is 777600, while the sum is 42.

Adding to 51235134433431 its reverse (13433443153215), we get a palindrome (64668577586646).

The spelling of 51235134433431 in words is "fifty-one trillion, two hundred thirty-five billion, one hundred thirty-four million, four hundred thirty-three thousand, four hundred thirty-one".