1231326000 has 240 divisors, whose sum is σ = 4369074528. Its totient is φ = 323136000.

The previous prime is 1231325987. The next prime is 1231326001. The reversal of 1231326000 is 6231321.

1231326000 is a `hidden beast` number, since 1 + 2 + 31 + 32 + 600 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is not an unprimeable number, because it can be changed into a prime (1231326001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1205490 + ... + 1206510.

Almost surely, 2^1231326000 is an apocalyptic number.

1231326000 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 1231326000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2184537264).

1231326000 is an abundant number, since it is smaller than the sum of its proper divisors (3137748528).

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

1231326000 is a wasteful number, since it uses less digits than its factorization.

1231326000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1231326000 is about 35090.2550574942. The cubic root of 1231326000 is about 1071.8261534008.

Adding to 1231326000 its reverse (6231321), we get a palindrome (1237557321).

The spelling of 1231326000 in words is "one billion, two hundred thirty-one million, three hundred twenty-six thousand".