101231206 has 4 divisors (see below), whose sum is σ = 151846812. Its totient is φ = 50615602.

The previous prime is 101231191. The next prime is 101231227. The reversal of 101231206 is 602132101.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 101231206.

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 as a sum of consecutive naturals, namely, 25307800 + ... + 25307803.

It is an arithmetic number, because the mean of its divisors is an integer number (37961703).

Almost surely, 2^101231206 is an apocalyptic number.

101231206 is a deficient number, since it is larger than the sum of its proper divisors (50615606).

101231206 is an equidigital number, since it uses as much as digits as its factorization.

101231206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50615605.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 101231206 is about 10061.3719740401. The cubic root of 101231206 is about 466.0560359221.

Adding to 101231206 its reverse (602132101), we get a palindrome (703363307).

The spelling of 101231206 in words is "one hundred one million, two hundred thirty-one thousand, two hundred six".