650318231 has 2 divisors, whose sum is σ = 650318232. Its totient is φ = 650318230.

The previous prime is 650318203. The next prime is 650318233. The reversal of 650318231 is 132813056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 650318231 - 2¹⁸ = 650056087 is a prime.

It is a super-2 number, since 2×650318231² = 845827603141938722, which contains 22 as substring.

Together with 650318233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 650318194 and 650318203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650318233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325159115 + 325159116.

It is an arithmetic number, because the mean of its divisors is an integer number (325159116).

Almost surely, 2^650318231 is an apocalyptic number.

650318231 is a deficient number, since it is larger than the sum of its proper divisors (1).

650318231 is an equidigital number, since it uses as much as digits as its factorization.

650318231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 650318231 is about 25501.3378276513. The cubic root of 650318231 is about 866.3804485008.

The spelling of 650318231 in words is "six hundred fifty million, three hundred eighteen thousand, two hundred thirty-one".