101531530 has 16 divisors (see below), whose sum is σ = 183132000. Its totient is φ = 40529232.

The previous prime is 101531527. The next prime is 101531533. The reversal of 101531530 is 35135101.

It is an interprime number because it is at equal distance from previous prime (101531527) and next prime (101531533).

It is a junction number, because it is equal to n+sod(n) for n = 101531498 and 101531507.

It is not an unprimeable number, because it can be changed into a prime (101531533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5184 + ... + 15163.

It is an arithmetic number, because the mean of its divisors is an integer number (11445750).

Almost surely, 2^101531530 is an apocalyptic number.

101531530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101531530 is a deficient number, since it is larger than the sum of its proper divisors (81600470).

101531530 is a wasteful number, since it uses less digits than its factorization.

101531530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20853.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 101531530 is about 10076.2855259267. The cubic root of 101531530 is about 466.5164658340.

Adding to 101531530 its reverse (35135101), we get a palindrome (136666631).

The spelling of 101531530 in words is "one hundred one million, five hundred thirty-one thousand, five hundred thirty".