1231403112000 has 336 divisors, whose sum is σ = 4407218944752. Its totient is φ = 328203878400.

The previous prime is 1231403111999. The next prime is 1231403112019. The reversal of 1231403112000 is 2113041321.

1231403112000 is a `hidden beast` number, since 1 + 231 + 403 + 11 + 20 + 0 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 661788758016 + 569614353984 = 813504^2 + 754728^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203972982 + ... + 203979018.

Almost surely, 2^{1231403112000} is an apocalyptic number.

1231403112000 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 1231403112000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2203609472376).

1231403112000 is an abundant number, since it is smaller than the sum of its proper divisors (3175815832752).

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

1231403112000 is a wasteful number, since it uses less digits than its factorization.

1231403112000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8903 (or 8880 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1231403112000 its reverse (2113041321), we get a palindrome (1233516153321).

The spelling of 1231403112000 in words is "one trillion, two hundred thirty-one billion, four hundred three million, one hundred twelve thousand".