101530144 has 12 divisors (see below), whose sum is σ = 199887534. Its totient is φ = 50765056.

The previous prime is 101530141. The next prime is 101530147. The reversal of 101530144 is 441035101.

It is an interprime number because it is at equal distance from previous prime (101530141) and next prime (101530147).

It can be written as a sum of positive squares in only one way, i.e., 88134544 + 13395600 = 9388^2 + 3660^2 .

It is not an unprimeable number, because it can be changed into a prime (101530141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1586377 + ... + 1586440.

Almost surely, 2^101530144 is an apocalyptic number.

It is an amenable number.

101530144 is a deficient number, since it is larger than the sum of its proper divisors (98357390).

101530144 is an equidigital number, since it uses as much as digits as its factorization.

101530144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172827 (or 3172819 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 101530144 is about 10076.2167503483. The cubic root of 101530144 is about 466.5143430296.

Adding to 101530144 its reverse (441035101), we get a palindrome (542565245).

The spelling of 101530144 in words is "one hundred one million, five hundred thirty thousand, one hundred forty-four".