23401881 has 6 divisors (see below), whose sum is σ = 33802730. Its totient is φ = 15601248.

The previous prime is 23401853. The next prime is 23401907. The reversal of 23401881 is 18810432.

It can be written as a sum of positive squares in only one way, i.e., 16160400 + 7241481 = 4020^2 + 2691^2 .

It is not a de Polignac number, because 23401881 - 2¹¹ = 23399833 is a prime.

It is a super-2 number, since 2×23401881² = 1095296068676322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23401831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1300096 + ... + 1300113.

Almost surely, 2^23401881 is an apocalyptic number.

It is an amenable number.

23401881 is a deficient number, since it is larger than the sum of its proper divisors (10400849).

23401881 is a wasteful number, since it uses less digits than its factorization.

23401881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600215 (or 2600212 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 23401881 is about 4837.5490695186. The cubic root of 23401881 is about 286.0335144190.

The spelling of 23401881 in words is "twenty-three million, four hundred one thousand, eight hundred eighty-one".