50131321 has 2 divisors, whose sum is σ = 50131322. Its totient is φ = 50131320.

The previous prime is 50131261. The next prime is 50131327. The reversal of 50131321 is 12313105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36735721 + 13395600 = 6061^2 + 3660^2 .

It is a cyclic number.

It is not a de Polignac number, because 50131321 - 2⁹ = 50130809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50131295 and 50131304.

It is not a weakly prime, because it can be changed into another prime (50131327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25065660 + 25065661.

It is an arithmetic number, because the mean of its divisors is an integer number (25065661).

Almost surely, 2^50131321 is an apocalyptic number.

It is an amenable number.

50131321 is a deficient number, since it is larger than the sum of its proper divisors (1).

50131321 is an equidigital number, since it uses as much as digits as its factorization.

50131321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 50131321 is about 7080.3475197196. The cubic root of 50131321 is about 368.7253950450.

Adding to 50131321 its reverse (12313105), we get a palindrome (62444426).

The spelling of 50131321 in words is "fifty million, one hundred thirty-one thousand, three hundred twenty-one".