305638101 has 12 divisors (see below), whose sum is σ = 442185120. Its totient is φ = 203432040.

The previous prime is 305638063. The next prime is 305638111. The reversal of 305638101 is 101836503.

It is not a de Polignac number, because 305638101 - 2⁶ = 305638037 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305638111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21231 + ... + 32588.

It is an arithmetic number, because the mean of its divisors is an integer number (36848760).

Almost surely, 2^305638101 is an apocalyptic number.

It is an amenable number.

305638101 is a deficient number, since it is larger than the sum of its proper divisors (136547019).

305638101 is a wasteful number, since it uses less digits than its factorization.

305638101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54456 (or 54453 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 305638101 is about 17482.5084298564. The cubic root of 305638101 is about 673.6006499677.

The spelling of 305638101 in words is "three hundred five million, six hundred thirty-eight thousand, one hundred one".