23231861 has 8 divisors (see below), whose sum is σ = 23786784. Its totient is φ = 22681360.

The previous prime is 23231833. The next prime is 23231869. The reversal of 23231861 is 16813232.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23231861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23231861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231869) 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, 11066 + ... + 12996.

It is an arithmetic number, because the mean of its divisors is an integer number (2973348).

Almost surely, 2^23231861 is an apocalyptic number.

It is an amenable number.

23231861 is a deficient number, since it is larger than the sum of its proper divisors (554923).

23231861 is a wasteful number, since it uses less digits than its factorization.

23231861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211.

The product of its digits is 1728, while the sum is 26.

The square root of 23231861 is about 4819.9440868126. The cubic root of 23231861 is about 285.3391305135.

The spelling of 23231861 in words is "twenty-three million, two hundred thirty-one thousand, eight hundred sixty-one".