247328101 has 4 divisors (see below), whose sum is σ = 247509612. Its totient is φ = 247146592.

The previous prime is 247328089. The next prime is 247328117. The reversal of 247328101 is 101823742.

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 244922500 + 2405601 = 15650^2 + 1551^2 .

It is a cyclic number.

It is not a de Polignac number, because 247328101 - 2⁵ = 247328069 is a prime.

It is a super-2 number, since 2×247328101² = 122342379088532402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 247328101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247328141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88696 + ... + 91441.

It is an arithmetic number, because the mean of its divisors is an integer number (61877403).

Almost surely, 2^247328101 is an apocalyptic number.

It is an amenable number.

247328101 is a deficient number, since it is larger than the sum of its proper divisors (181511).

247328101 is a wasteful number, since it uses less digits than its factorization.

247328101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181510.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 247328101 is about 15726.6684647448. The cubic root of 247328101 is about 627.7082273770.

The spelling of 247328101 in words is "two hundred forty-seven million, three hundred twenty-eight thousand, one hundred one".