643152313 has 8 divisors (see below), whose sum is σ = 682117632. Its totient is φ = 604312896.

The previous prime is 643152311. The next prime is 643152317. The reversal of 643152313 is 313251346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 643152313 - 2¹ = 643152311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (643152311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20845 + ... + 41482.

It is an arithmetic number, because the mean of its divisors is an integer number (85264704).

Almost surely, 2^643152313 is an apocalyptic number.

It is an amenable number.

643152313 is a deficient number, since it is larger than the sum of its proper divisors (38965319).

643152313 is a wasteful number, since it uses less digits than its factorization.

643152313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62951.

The product of its digits is 6480, while the sum is 28.

The square root of 643152313 is about 25360.4478075605. The cubic root of 643152313 is about 863.1864452804.

The spelling of 643152313 in words is "six hundred forty-three million, one hundred fifty-two thousand, three hundred thirteen".