101530231 has 4 divisors (see below), whose sum is σ = 110760264. Its totient is φ = 92300200.

The previous prime is 101530229. The next prime is 101530241. The reversal of 101530231 is 132035101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132035101 = 11 ⋅12003191.

It is a cyclic number.

It is not a de Polignac number, because 101530231 - 2¹ = 101530229 is a prime.

It is a super-2 number, since 2×101530231² = 20616775613826722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101530241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4615000 + ... + 4615021.

It is an arithmetic number, because the mean of its divisors is an integer number (27690066).

Almost surely, 2^101530231 is an apocalyptic number.

101530231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101530231 is a deficient number, since it is larger than the sum of its proper divisors (9230033).

101530231 is an equidigital number, since it uses as much as digits as its factorization.

101530231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9230032.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 101530231 is about 10076.2210674439. The cubic root of 101530231 is about 466.5144762798.

Adding to 101530231 its reverse (132035101), we get a palindrome (233565332).

It can be divided in two parts, 101530 and 231, that added together give a square (101761 = 319²).

The spelling of 101530231 in words is "one hundred one million, five hundred thirty thousand, two hundred thirty-one".