100031023 has 4 divisors (see below), whose sum is σ = 100070608. Its totient is φ = 99991440.

The previous prime is 100031011. The next prime is 100031039. The reversal of 100031023 is 320130001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320130001 = 757 ⋅422893.

It is a cyclic number.

It is not a de Polignac number, because 100031023 - 2¹⁷ = 99899951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100031003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15723 + ... + 21148.

It is an arithmetic number, because the mean of its divisors is an integer number (25017652).

Almost surely, 2^100031023 is an apocalyptic number.

100031023 is a deficient number, since it is larger than the sum of its proper divisors (39585).

100031023 is an equidigital number, since it uses as much as digits as its factorization.

100031023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39584.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 100031023 is about 10001.5510297153. The cubic root of 100031023 is about 464.2068770687.

Adding to 100031023 its reverse (320130001), we get a palindrome (420161024).

It can be divided in two parts, 10003 and 1023, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 100031023 in words is "one hundred million, thirty-one thousand, twenty-three".