23101500 has 48 divisors (see below), whose sum is σ = 67275936. Its totient is φ = 6160000.

The previous prime is 23101489. The next prime is 23101531. The reversal of 23101500 is 510132.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6201 + ... + 9200.

It is an arithmetic number, because the mean of its divisors is an integer number (1401582).

Almost surely, 2^23101500 is an apocalyptic number.

23101500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23101500 is an abundant number, since it is smaller than the sum of its proper divisors (44174436).

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

23101500 is a wasteful number, since it uses less digits than its factorization.

23101500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15423 (or 15411 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 23101500 is about 4806.4019806920. The cubic root of 23101500 is about 284.8044210640.

Adding to 23101500 its reverse (510132), we get a palindrome (23611632).

The spelling of 23101500 in words is "twenty-three million, one hundred one thousand, five hundred".