100144231 has 32 divisors (see below), whose sum is σ = 121927680. Its totient is φ = 81180000.

The previous prime is 100144217. The next prime is 100144243. The reversal of 100144231 is 132441001.

It is a de Polignac number, because none of the positive numbers 2^k-100144231 is a prime.

It is a super-2 number, since 2×100144231² = 20057734005162722, 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 (100144201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 398856 + ... + 399106.

It is an arithmetic number, because the mean of its divisors is an integer number (3810240).

Almost surely, 2^100144231 is an apocalyptic number.

100144231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100144231 is a deficient number, since it is larger than the sum of its proper divisors (21783449).

100144231 is a wasteful number, since it uses less digits than its factorization.

100144231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 100144231 is about 10007.2089515509. The cubic root of 100144231 is about 464.3819298279.

Adding to 100144231 its reverse (132441001), we get a palindrome (232585232).

The spelling of 100144231 in words is "one hundred million, one hundred forty-four thousand, two hundred thirty-one".