23970981 has 8 divisors (see below), whose sum is σ = 32346720. Its totient is φ = 15787952.

The previous prime is 23970959. The next prime is 23970997. The reversal of 23970981 is 18907932.

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 23970981 - 2¹⁴ = 23954597 is a prime.

It is a super-2 number, since 2×23970981² = 1149215860204722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23970911) 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, 47886 + ... + 48383.

It is an arithmetic number, because the mean of its divisors is an integer number (4043340).

Almost surely, 2^23970981 is an apocalyptic number.

It is an amenable number.

23970981 is a deficient number, since it is larger than the sum of its proper divisors (8375739).

23970981 is an equidigital number, since it uses as much as digits as its factorization.

23970981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96355.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 23970981 is about 4896.0168504612. The cubic root of 23970981 is about 288.3336098393. Note that the first 3 decimals are identical.

The spelling of 23970981 in words is "twenty-three million, nine hundred seventy thousand, nine hundred eighty-one".