23240031 has 8 divisors (see below), whose sum is σ = 31009920. Its totient is φ = 15481752.

The previous prime is 23240029. The next prime is 23240039. The reversal of 23240031 is 13004232.

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

It is not a de Polignac number, because 23240031 - 2¹ = 23240029 is a prime.

It is a super-2 number, since 2×23240031² = 1080198081761922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23240039) 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, 4390 + ... + 8108.

It is an arithmetic number, because the mean of its divisors is an integer number (3876240).

Almost surely, 2^23240031 is an apocalyptic number.

23240031 is a deficient number, since it is larger than the sum of its proper divisors (7769889).

23240031 is a wasteful number, since it uses less digits than its factorization.

23240031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5805.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23240031 is about 4820.7915325183. The cubic root of 23240031 is about 285.3725752079.

Adding to 23240031 its reverse (13004232), we get a palindrome (36244263).

The spelling of 23240031 in words is "twenty-three million, two hundred forty thousand, thirty-one".