100023081 has 16 divisors (see below), whose sum is σ = 138001920. Its totient is φ = 64373760.

The previous prime is 100023043. The next prime is 100023101. The reversal of 100023081 is 180320001.

It is a happy number.

It is not a de Polignac number, because 100023081 - 2⁶ = 100023017 is a prime.

It is a super-2 number, since 2×100023081² = 20009233465465122, 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 100023081.

It is not an unprimeable number, because it can be changed into a prime (100024081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46281 + ... + 48393.

It is an arithmetic number, because the mean of its divisors is an integer number (8625120).

Almost surely, 2^100023081 is an apocalyptic number.

It is an amenable number.

100023081 is a deficient number, since it is larger than the sum of its proper divisors (37978839).

100023081 is a wasteful number, since it uses less digits than its factorization.

100023081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 100023081 is about 10001.1539834161. The cubic root of 100023081 is about 464.1945914514.

Adding to 100023081 its reverse (180320001), we get a palindrome (280343082).

The spelling of 100023081 in words is "one hundred million, twenty-three thousand, eighty-one".