51030311203 has 2 divisors, whose sum is σ = 51030311204. Its totient is φ = 51030311202.

The previous prime is 51030311179. The next prime is 51030311239. The reversal of 51030311203 is 30211303015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51030311203 - 2³³ = 42440376611 is a prime.

It is a super-2 number, since 2×51030311203² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51030311803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25515155601 + 25515155602.

It is an arithmetic number, because the mean of its divisors is an integer number (25515155602).

Almost surely, 2^51030311203 is an apocalyptic number.

51030311203 is a deficient number, since it is larger than the sum of its proper divisors (1).

51030311203 is an equidigital number, since it uses as much as digits as its factorization.

51030311203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

Adding to 51030311203 its reverse (30211303015), we get a palindrome (81241614218).

The spelling of 51030311203 in words is "fifty-one billion, thirty million, three hundred eleven thousand, two hundred three".