51234043236231 has 4 divisors (see below), whose sum is σ = 68312057648312. Its totient is φ = 34156028824152.

The previous prime is 51234043236223. The next prime is 51234043236251. The reversal of 51234043236231 is 13263234043215.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51234043236231 - 2³ = 51234043236223 is a prime.

It is a super-2 number, since 2×51234043236231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51234043236231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51234043236251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8539007206036 + ... + 8539007206041.

It is an arithmetic number, because the mean of its divisors is an integer number (17078014412078).

Almost surely, 2^{51234043236231} is an apocalyptic number.

51234043236231 is a deficient number, since it is larger than the sum of its proper divisors (17078014412081).

51234043236231 is a wasteful number, since it uses less digits than its factorization.

51234043236231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17078014412080.

The product of its (nonzero) digits is 311040, while the sum is 39.

Adding to 51234043236231 its reverse (13263234043215), we get a palindrome (64497277279446).

The spelling of 51234043236231 in words is "fifty-one trillion, two hundred thirty-four billion, forty-three million, two hundred thirty-six thousand, two hundred thirty-one".