100512231 has 16 divisors (see below), whose sum is σ = 144668160. Its totient is φ = 61883360.

The previous prime is 100512229. The next prime is 100512263. The reversal of 100512231 is 132215001.

It is a cyclic number.

It is not a de Polignac number, because 100512231 - 2¹ = 100512229 is a prime.

It is a super-2 number, since 2×100512231² = 20205417161194722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100512231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100512281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23115 + ... + 27116.

It is an arithmetic number, because the mean of its divisors is an integer number (9041760).

Almost surely, 2^100512231 is an apocalyptic number.

100512231 is a deficient number, since it is larger than the sum of its proper divisors (44155929).

100512231 is a wasteful number, since it uses less digits than its factorization.

100512231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50286.

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

The square root of 100512231 is about 10025.5788361570. The cubic root of 100512231 is about 464.9500559146.

Adding to 100512231 its reverse (132215001), we get a palindrome (232727232).

The spelling of 100512231 in words is "one hundred million, five hundred twelve thousand, two hundred thirty-one".