1231200131103 has 12 divisors (see below), whose sum is σ = 1826465059848. Its totient is φ = 798616301040.

The previous prime is 1231200131101. The next prime is 1231200131149. The reversal of 1231200131103 is 3011310021321.

1231200131103 is a `hidden beast` number, since 1 + 231 + 200 + 131 + 103 = 666.

It is not a de Polignac number, because 1231200131103 - 2¹ = 1231200131101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231200131101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1848648513 + ... + 1848649178.

It is an arithmetic number, because the mean of its divisors is an integer number (152205421654).

Almost surely, 2^{1231200131103} is an apocalyptic number.

1231200131103 is a deficient number, since it is larger than the sum of its proper divisors (595264928745).

1231200131103 is a wasteful number, since it uses less digits than its factorization.

1231200131103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697297734 (or 3697297731 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1231200131103 its reverse (3011310021321), we get a palindrome (4242510152424).

The spelling of 1231200131103 in words is "one trillion, two hundred thirty-one billion, two hundred million, one hundred thirty-one thousand, one hundred three".