651140323 has 2 divisors, whose sum is σ = 651140324. Its totient is φ = 651140322.

The previous prime is 651140293. The next prime is 651140381. The reversal of 651140323 is 323041156.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 651140323 - 2²⁹ = 114269411 is a prime.

It is not a weakly prime, because it can be changed into another prime (651140123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325570161 + 325570162.

It is an arithmetic number, because the mean of its divisors is an integer number (325570162).

Almost surely, 2^651140323 is an apocalyptic number.

651140323 is a deficient number, since it is larger than the sum of its proper divisors (1).

651140323 is an equidigital number, since it uses as much as digits as its factorization.

651140323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 651140323 is about 25517.4513421697. The cubic root of 651140323 is about 866.7453695950.

Adding to 651140323 its reverse (323041156), we get a palindrome (974181479).

The spelling of 651140323 in words is "six hundred fifty-one million, one hundred forty thousand, three hundred twenty-three".