1231532330112 has 384 divisors, whose sum is σ = 4124608924800. Its totient is φ = 345418629120.

The previous prime is 1231532330101. The next prime is 1231532330227. The reversal of 1231532330112 is 2110332351321.

1231532330112 is a `hidden beast` number, since 1 + 2 + 31 + 5 + 323 + 301 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×1231532330112² (a number of 25 digits) contains 22 as substring.

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, 283826439 + ... + 283830777.

It is an arithmetic number, because the mean of its divisors is an integer number (10741169075).

Almost surely, 2^{1231532330112} is an apocalyptic number.

1231532330112 is a gapful number since it is divisible by the number (12) 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 1231532330112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2062304462400).

1231532330112 is an abundant number, since it is smaller than the sum of its proper divisors (2893076594688).

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

1231532330112 is a wasteful number, since it uses less digits than its factorization.

1231532330112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004 (or 4989 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 1231532330112 its reverse (2110332351321), we get a palindrome (3341864681433).

The spelling of 1231532330112 in words is "one trillion, two hundred thirty-one billion, five hundred thirty-two million, three hundred thirty thousand, one hundred twelve".