101231205 has 16 divisors (see below), whose sum is σ = 162349440. Its totient is φ = 53863488.

The previous prime is 101231191. The next prime is 101231227. The reversal of 101231205 is 502132101.

It is not a de Polignac number, because 101231205 - 2⁷ = 101231077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1102 + ... + 14271.

It is an arithmetic number, because the mean of its divisors is an integer number (10146840).

Almost surely, 2^101231205 is an apocalyptic number.

101231205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101231205 is a deficient number, since it is larger than the sum of its proper divisors (61118235).

101231205 is a wasteful number, since it uses less digits than its factorization.

101231205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15820.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 101231205 is about 10061.3719243451. The cubic root of 101231205 is about 466.0560343874.

Adding to 101231205 its reverse (502132101), we get a palindrome (603363306).

The spelling of 101231205 in words is "one hundred one million, two hundred thirty-one thousand, two hundred five".