1231200142132 has 12 divisors (see below), whose sum is σ = 2174367224260. Its totient is φ = 609952363776.

The previous prime is 1231200142111. The next prime is 1231200142181. The reversal of 1231200142132 is 2312410021321.

It can be written as a sum of positive squares in 2 ways, for example, as 775097116816 + 456103025316 = 880396^2 + 675354^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1411926333 + ... + 1411927204.

Almost surely, 2^{1231200142132} is an apocalyptic number.

It is an amenable number.

1231200142132 is a deficient number, since it is larger than the sum of its proper divisors (943167082128).

1231200142132 is a wasteful number, since it uses less digits than its factorization.

1231200142132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823853650 (or 2823853648 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1231200142132 its reverse (2312410021321), we get a palindrome (3543610163453).

The spelling of 1231200142132 in words is "one trillion, two hundred thirty-one billion, two hundred million, one hundred forty-two thousand, one hundred thirty-two".