102440628317 has 4 divisors (see below), whose sum is σ = 102880287900. Its totient is φ = 102000968736.

The previous prime is 102440628289. The next prime is 102440628341. The reversal of 102440628317 is 713826044201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14251823161 + 88188805156 = 119381^2 + 296966^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102440628317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102440618317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219829442 + ... + 219829907.

It is an arithmetic number, because the mean of its divisors is an integer number (25720071975).

Almost surely, 2^102440628317 is an apocalyptic number.

It is an amenable number.

102440628317 is a deficient number, since it is larger than the sum of its proper divisors (439659583).

102440628317 is an equidigital number, since it uses as much as digits as its factorization.

102440628317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439659582.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 102440628317 in words is "one hundred two billion, four hundred forty million, six hundred twenty-eight thousand, three hundred seventeen".