650138311 has 2 divisors, whose sum is σ = 650138312. Its totient is φ = 650138310.

The previous prime is 650138303. The next prime is 650138317. The reversal of 650138311 is 113831056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 650138311 - 2³ = 650138303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 650138311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650138317) 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 as a sum of consecutive naturals, namely, 325069155 + 325069156.

It is an arithmetic number, because the mean of its divisors is an integer number (325069156).

Almost surely, 2^650138311 is an apocalyptic number.

650138311 is a deficient number, since it is larger than the sum of its proper divisors (1).

650138311 is an equidigital number, since it uses as much as digits as its factorization.

650138311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 650138311 is about 25497.8099255603. The cubic root of 650138311 is about 866.3005422126.

Adding to 650138311 its reverse (113831056), we get a palindrome (763969367).

The spelling of 650138311 in words is "six hundred fifty million, one hundred thirty-eight thousand, three hundred eleven".