101031530 has 16 divisors (see below), whose sum is σ = 181983240. Its totient is φ = 40384512.

The previous prime is 101031521. The next prime is 101031547. The reversal of 101031530 is 35130101.

It can be written as a sum of positive squares in 4 ways, for example, as 92948881 + 8082649 = 9641^2 + 2843^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17666 + ... + 22674.

Almost surely, 2^101031530 is an apocalyptic number.

101031530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101031530 is a deficient number, since it is larger than the sum of its proper divisors (80951710).

101031530 is a wasteful number, since it uses less digits than its factorization.

101031530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7033.

The product of its (nonzero) digits is 45, while the sum is 14.

The square root of 101031530 is about 10051.4441748437. Note that the first 3 decimals coincide. The cubic root of 101031530 is about 465.7494063028.

Adding to 101031530 its reverse (35130101), we get a palindrome (136161631).

The spelling of 101031530 in words is "one hundred one million, thirty-one thousand, five hundred thirty".