23081000 has 32 divisors (see below), whose sum is σ = 54011880. Its totient is φ = 9232000.

The previous prime is 23080999. The next prime is 23081017. The reversal of 23081000 is 18032.

It can be written as a sum of positive squares in 4 ways, for example, as 6646084 + 16434916 = 2578^2 + 4054^2 .

It is a super-2 number, since 2×23081000² = 1065465122000000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10541 + ... + 12540.

Almost surely, 2^23081000 is an apocalyptic number.

23081000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23081000 is an abundant number, since it is smaller than the sum of its proper divisors (30930880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23081000 is a wasteful number, since it uses less digits than its factorization.

23081000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23102 (or 23088 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 23081000 is about 4804.2689350202. The cubic root of 23081000 is about 284.7201520990.

Adding to 23081000 its reverse (18032), we get a palindrome (23099032).

The spelling of 23081000 in words is "twenty-three million, eighty-one thousand".