23145102 has 20 divisors (see below), whose sum is σ = 51862536. Its totient is φ = 7714980.

The previous prime is 23145071. The next prime is 23145113. The reversal of 23145102 is 20154132.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 71274 + ... + 71597.

Almost surely, 2^23145102 is an apocalyptic number.

23145102 is an abundant number, since it is smaller than the sum of its proper divisors (28717434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23145102 is a wasteful number, since it uses less digits than its factorization.

23145102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142885 (or 142876 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 23145102 is about 4810.9356678301. The cubic root of 23145102 is about 284.9834893482.

Adding to 23145102 its reverse (20154132), we get a palindrome (43299234).

The spelling of 23145102 in words is "twenty-three million, one hundred forty-five thousand, one hundred two".