51211011323 has 2 divisors, whose sum is σ = 51211011324. Its totient is φ = 51211011322.

The previous prime is 51211011283. The next prime is 51211011349. The reversal of 51211011323 is 32311011215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51211011323 - 2⁸ = 51211011067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51211011295 and 51211011304.

It is not a weakly prime, because it can be changed into another prime (51211011373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25605505661 + 25605505662.

It is an arithmetic number, because the mean of its divisors is an integer number (25605505662).

Almost surely, 2^51211011323 is an apocalyptic number.

51211011323 is a deficient number, since it is larger than the sum of its proper divisors (1).

51211011323 is an equidigital number, since it uses as much as digits as its factorization.

51211011323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 51211011323 its reverse (32311011215), we get a palindrome (83522022538).

The spelling of 51211011323 in words is "fifty-one billion, two hundred eleven million, eleven thousand, three hundred twenty-three".