1230171500 has 48 divisors (see below), whose sum is σ = 2690347296. Its totient is φ = 491400000.

The previous prime is 1230171497. The next prime is 1230171517. The reversal of 1230171500 is 51710321.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 545375 + ... + 547625.

It is an arithmetic number, because the mean of its divisors is an integer number (56048902).

Almost surely, 2^1230171500 is an apocalyptic number.

1230171500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230171500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1345173648).

1230171500 is an abundant number, since it is smaller than the sum of its proper divisors (1460175796).

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

1230171500 is a wasteful number, since it uses less digits than its factorization.

1230171500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363 (or 3351 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 1230171500 is about 35073.8007635329. The cubic root of 1230171500 is about 1071.4910647147.

Adding to 1230171500 its reverse (51710321), we get a palindrome (1281881821).

The spelling of 1230171500 in words is "one billion, two hundred thirty million, one hundred seventy-one thousand, five hundred".