1231131232000 has 72 divisors (see below), whose sum is σ = 3066901870032. Its totient is φ = 492452480000.

The previous prime is 1231131231983. The next prime is 1231131232007. The reversal of 1231131232000 is 2321311321.

It is a super-2 number, since 2×1231131232000² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231131232007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19204426 + ... + 19268425.

It is an arithmetic number, because the mean of its divisors is an integer number (42595859306).

Almost surely, 2^{1231131232000} is an apocalyptic number.

1231131232000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231131232000 is an abundant number, since it is smaller than the sum of its proper divisors (1835770638032).

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

1231131232000 is an frugal number, since it uses more digits than its factorization.

1231131232000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38472882 (or 38472858 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1231131232000 its reverse (2321311321), we get a palindrome (1233452543321).

The spelling of 1231131232000 in words is "one trillion, two hundred thirty-one billion, one hundred thirty-one million, two hundred thirty-two thousand".