101530870 has 64 divisors (see below), whose sum is σ = 222405120. Its totient is φ = 32596992.

The previous prime is 101530843. The next prime is 101530939. The reversal of 101530870 is 78035101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128617 + ... + 129403.

It is an arithmetic number, because the mean of its divisors is an integer number (3475080).

Almost surely, 2^101530870 is an apocalyptic number.

101530870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101530870 is an abundant number, since it is smaller than the sum of its proper divisors (120874250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101530870 is a wasteful number, since it uses less digits than its factorization.

101530870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 101530870 is about 10076.2527757098. The cubic root of 101530870 is about 466.5154549772.

Adding to 101530870 its reverse (78035101), we get a palindrome (179565971).

It can be divided in two parts, 101530 and 870, that added together give a square (102400 = 320²).

The spelling of 101530870 in words is "one hundred one million, five hundred thirty thousand, eight hundred seventy".