100031243 has 8 divisors (see below), whose sum is σ = 109202688. Its totient is φ = 91070784.

The previous prime is 100031189. The next prime is 100031263. The reversal of 100031243 is 342130001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100031243 - 2¹⁰ = 100030219 is a prime.

It is a super-2 number, since 2×100031243² = 20012499152250098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100031263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51755 + ... + 53652.

It is an arithmetic number, because the mean of its divisors is an integer number (13650336).

Almost surely, 2^100031243 is an apocalyptic number.

100031243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

100031243 is a deficient number, since it is larger than the sum of its proper divisors (9171445).

100031243 is a wasteful number, since it uses less digits than its factorization.

100031243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105493.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 100031243 is about 10001.5620280034. The cubic root of 100031243 is about 464.2072173813.

Adding to 100031243 its reverse (342130001), we get a palindrome (442161244).

The spelling of 100031243 in words is "one hundred million, thirty-one thousand, two hundred forty-three".