51323203403 has 2 divisors, whose sum is σ = 51323203404. Its totient is φ = 51323203402.

The previous prime is 51323203391. The next prime is 51323203493. The reversal of 51323203403 is 30430232315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51323203403 - 2⁸ = 51323203147 is a prime.

It is not a weakly prime, because it can be changed into another prime (51323203493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25661601701 + 25661601702.

It is an arithmetic number, because the mean of its divisors is an integer number (25661601702).

Almost surely, 2^51323203403 is an apocalyptic number.

51323203403 is a deficient number, since it is larger than the sum of its proper divisors (1).

51323203403 is an equidigital number, since it uses as much as digits as its factorization.

51323203403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 51323203403 its reverse (30430232315), we get a palindrome (81753435718).

The spelling of 51323203403 in words is "fifty-one billion, three hundred twenty-three million, two hundred three thousand, four hundred three".