23197881 has 8 divisors (see below), whose sum is σ = 35349184. Its totient is φ = 13255920.

The previous prime is 23197859. The next prime is 23197891. The reversal of 23197881 is 18879132.

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

It is not a de Polignac number, because 23197881 - 2¹³ = 23189689 is a prime.

It is a super-2 number, since 2×23197881² = 1076283365780322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23197891) 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, 552310 + ... + 552351.

It is an arithmetic number, because the mean of its divisors is an integer number (4418648).

Almost surely, 2^23197881 is an apocalyptic number.

23197881 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23197881 is a deficient number, since it is larger than the sum of its proper divisors (12151303).

23197881 is a wasteful number, since it uses less digits than its factorization.

23197881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104671.

The product of its digits is 24192, while the sum is 39.

The square root of 23197881 is about 4816.4178597792. The cubic root of 23197881 is about 285.1999458726.

The spelling of 23197881 in words is "twenty-three million, one hundred ninety-seven thousand, eight hundred eighty-one".