101320144 has 20 divisors (see below), whose sum is σ = 196467460. Its totient is φ = 50618880.

The previous prime is 101320139. The next prime is 101320151. The reversal of 101320144 is 441023101.

It can be written as a sum of positive squares in 2 ways, for example, as 47444544 + 53875600 = 6888^2 + 7340^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30904 + ... + 34024.

It is an arithmetic number, because the mean of its divisors is an integer number (9823373).

Almost surely, 2^101320144 is an apocalyptic number.

It is an amenable number.

101320144 is a deficient number, since it is larger than the sum of its proper divisors (95147316).

101320144 is a wasteful number, since it uses less digits than its factorization.

101320144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5158 (or 5152 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 101320144 is about 10065.7907786721. The cubic root of 101320144 is about 466.1924825128.

Adding to 101320144 its reverse (441023101), we get a palindrome (542343245).

The spelling of 101320144 in words is "one hundred one million, three hundred twenty thousand, one hundred forty-four".