23681236 has 6 divisors (see below), whose sum is σ = 41442170. Its totient is φ = 11840616.

The previous prime is 23681227. The next prime is 23681249. The reversal of 23681236 is 63218632.

It can be written as a sum of positive squares in only one way, i.e., 20757136 + 2924100 = 4556^2 + 1710^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23681198 and 23681207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2960151 + ... + 2960158.

Almost surely, 2^23681236 is an apocalyptic number.

It is an amenable number.

23681236 is a deficient number, since it is larger than the sum of its proper divisors (17760934).

23681236 is a wasteful number, since it uses less digits than its factorization.

23681236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5920313 (or 5920311 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 23681236 is about 4866.3370207991. The cubic root of 23681236 is about 287.1671702296.

Adding to 23681236 its reverse (63218632), we get a palindrome (86899868).

The spelling of 23681236 in words is "twenty-three million, six hundred eighty-one thousand, two hundred thirty-six".