1231232000 has 88 divisors (see below), whose sum is σ = 3071973840. Its totient is φ = 492441600.

The previous prime is 1231231997. The next prime is 1231232003. The reversal of 1231232000 is 2321321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1231231997) and next prime (1231232003).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231232003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123191 + ... + 132809.

Almost surely, 2^1231232000 is an apocalyptic number.

1231232000 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 1231232000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1535986920).

1231232000 is an abundant number, since it is smaller than the sum of its proper divisors (1840741840).

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

1231232000 is an frugal number, since it uses more digits than its factorization.

1231232000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9654 (or 9626 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1231232000 is about 35088.9156287281. The cubic root of 1231232000 is about 1071.7988781376.

Adding to 1231232000 its reverse (2321321), we get a palindrome (1233553321).

The spelling of 1231232000 in words is "one billion, two hundred thirty-one million, two hundred thirty-two thousand".