13123863 has 40 divisors (see below), whose sum is σ = 20966880. Its totient is φ = 8164800.

The previous prime is 13123861. The next prime is 13123879. The reversal of 13123863 is 36832131.

It is a happy number.

It is not a de Polignac number, because 13123863 - 2¹ = 13123861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123861) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 86838 + ... + 86988.

It is an arithmetic number, because the mean of its divisors is an integer number (524172).

Almost surely, 2^13123863 is an apocalyptic number.

13123863 is a deficient number, since it is larger than the sum of its proper divisors (7843017).

13123863 is a wasteful number, since it uses less digits than its factorization.

13123863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 220 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 13123863 is about 3622.6872622406. The cubic root of 13123863 is about 235.8778873676.

Adding to 13123863 its reverse (36832131), we get a palindrome (49955994).

The spelling of 13123863 in words is "thirteen million, one hundred twenty-three thousand, eight hundred sixty-three".