23161436 has 6 divisors (see below), whose sum is σ = 40532520. Its totient is φ = 11580716.

The previous prime is 23161427. The next prime is 23161441. The reversal of 23161436 is 63416132.

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, 2895176 + ... + 2895183.

It is an arithmetic number, because the mean of its divisors is an integer number (6755420).

Almost surely, 2^23161436 is an apocalyptic number.

It is an amenable number.

23161436 is a deficient number, since it is larger than the sum of its proper divisors (17371084).

23161436 is a wasteful number, since it uses less digits than its factorization.

23161436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5790363 (or 5790361 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 23161436 is about 4812.6329592023. The cubic root of 23161436 is about 285.0505132585.

Adding to 23161436 its reverse (63416132), we get a palindrome (86577568).

The spelling of 23161436 in words is "twenty-three million, one hundred sixty-one thousand, four hundred thirty-six".