23401331 has 8 divisors (see below), whose sum is σ = 25206720. Its totient is φ = 21653352.

The previous prime is 23401307. The next prime is 23401349. The reversal of 23401331 is 13310432.

It is a happy number.

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 23401331 - 2⁶ = 23401267 is a prime.

It is a super-2 number, since 2×23401331² = 1095244585143122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23401351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13505 + ... + 15138.

It is an arithmetic number, because the mean of its divisors is an integer number (3150840).

Almost surely, 2^23401331 is an apocalyptic number.

23401331 is a deficient number, since it is larger than the sum of its proper divisors (1805389).

23401331 is a wasteful number, since it uses less digits than its factorization.

23401331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28705.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 23401331 is about 4837.4922222160. The cubic root of 23401331 is about 286.0312735782.

Adding to 23401331 its reverse (13310432), we get a palindrome (36711763).

It can be divided in two parts, 23401 and 331, that added together give a palindrome (23732).

The spelling of 23401331 in words is "twenty-three million, four hundred one thousand, three hundred thirty-one".