651005323 has 2 divisors, whose sum is σ = 651005324. Its totient is φ = 651005322.

The previous prime is 651005309. The next prime is 651005357. The reversal of 651005323 is 323500156.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 651005323 - 2⁵ = 651005291 is a prime.

It is not a weakly prime, because it can be changed into another prime (651005023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325502661 + 325502662.

It is an arithmetic number, because the mean of its divisors is an integer number (325502662).

Almost surely, 2^651005323 is an apocalyptic number.

651005323 is a deficient number, since it is larger than the sum of its proper divisors (1).

651005323 is an equidigital number, since it uses as much as digits as its factorization.

651005323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 651005323 is about 25514.8059565422. The cubic root of 651005323 is about 866.6854650919.

Adding to 651005323 its reverse (323500156), we get a palindrome (974505479).

The spelling of 651005323 in words is "six hundred fifty-one million, five thousand, three hundred twenty-three".