1231200032031 has 12 divisors (see below), whose sum is σ = 1778729023552. Its totient is φ = 820648185696.

The previous prime is 1231200031937. The next prime is 1231200032047. The reversal of 1231200032031 is 1302300021321.

1231200032031 is a `hidden beast` number, since 1 + 2 + 312 + 0 + 0 + 0 + 320 + 31 = 666.

It is not a de Polignac number, because 1231200032031 - 2⁷ = 1231200031903 is a prime.

It is a super-2 number, since 2×1231200032031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231200031995 and 1231200032013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231200032131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12601606 + ... + 12698931.

Almost surely, 2^{1231200032031} is an apocalyptic number.

1231200032031 is a deficient number, since it is larger than the sum of its proper divisors (547528991521).

1231200032031 is a wasteful number, since it uses less digits than its factorization.

1231200032031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25305950 (or 25305947 counting only the distinct ones).

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

Adding to 1231200032031 its reverse (1302300021321), we get a palindrome (2533500053352).

The spelling of 1231200032031 in words is "one trillion, two hundred thirty-one billion, two hundred million, thirty-two thousand, thirty-one".