1231884288 has 260 divisors, whose sum is σ = 3805866240. Its totient is φ = 396804096.

The previous prime is 1231884287. The next prime is 1231884289. The reversal of 1231884288 is 8824881321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1231884287) and next prime (1231884289).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231884287) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15593433 + ... + 15593511.

Almost surely, 2^1231884288 is an apocalyptic number.

1231884288 is a gapful number since it is divisible by the number (18) 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 1231884288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1902933120).

1231884288 is an abundant number, since it is smaller than the sum of its proper divisors (2573981952).

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

1231884288 is an frugal number, since it uses more digits than its factorization.

1231884288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 131 counting only the distinct ones).

The product of its digits is 196608, while the sum is 45.

The square root of 1231884288 is about 35098.2091850852. The cubic root of 1231884288 is about 1071.9881189743.

The spelling of 1231884288 in words is "one billion, two hundred thirty-one million, eight hundred eighty-four thousand, two hundred eighty-eight".