51343225331 has 4 divisors (see below), whose sum is σ = 51344159664. Its totient is φ = 51342291000.

The previous prime is 51343225313. The next prime is 51343225411. The reversal of 51343225331 is 13352234315.

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

It is a cyclic number.

It is not a de Polignac number, because 51343225331 - 2²² = 51339031027 is a prime.

It is a super-2 number, since 2×51343225331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51343225301) 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, 379220 + ... + 496481.

It is an arithmetic number, because the mean of its divisors is an integer number (12836039916).

Almost surely, 2^51343225331 is an apocalyptic number.

51343225331 is a deficient number, since it is larger than the sum of its proper divisors (934333).

51343225331 is an equidigital number, since it uses as much as digits as its factorization.

51343225331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934332.

The product of its digits is 32400, while the sum is 32.

Adding to 51343225331 its reverse (13352234315), we get a palindrome (64695459646).

The spelling of 51343225331 in words is "fifty-one billion, three hundred forty-three million, two hundred twenty-five thousand, three hundred thirty-one".