461640343 has 2 divisors, whose sum is σ = 461640344. Its totient is φ = 461640342.

The previous prime is 461640341. The next prime is 461640349. The reversal of 461640343 is 343046164.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 461640343 - 2¹ = 461640341 is a prime.

It is a super-2 number, since 2×461640343² = 426223612570315298, which contains 22 as substring.

Together with 461640341, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461640341) 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, 230820171 + 230820172.

It is an arithmetic number, because the mean of its divisors is an integer number (230820172).

Almost surely, 2^461640343 is an apocalyptic number.

461640343 is a deficient number, since it is larger than the sum of its proper divisors (1).

461640343 is an equidigital number, since it uses as much as digits as its factorization.

461640343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 461640343 is about 21485.8172523179. The cubic root of 461640343 is about 772.8607493168.

The spelling of 461640343 in words is "four hundred sixty-one million, six hundred forty thousand, three hundred forty-three".