51340311 has 24 divisors (see below), whose sum is σ = 83900544. Its totient is φ = 31113720.

The previous prime is 51340259. The next prime is 51340319. The reversal of 51340311 is 11304315.

51340311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51340311 - 2²² = 47146007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51340319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6931 + ... + 12276.

It is an arithmetic number, because the mean of its divisors is an integer number (3495856).

Almost surely, 2^51340311 is an apocalyptic number.

51340311 is a deficient number, since it is larger than the sum of its proper divisors (32560233).

51340311 is a wasteful number, since it uses less digits than its factorization.

51340311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19233 (or 19221 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 51340311 is about 7165.2153491713. The cubic root of 51340311 is about 371.6659983320.

Adding to 51340311 its reverse (11304315), we get a palindrome (62644626).

The spelling of 51340311 in words is "fifty-one million, three hundred forty thousand, three hundred eleven".