1231900200001 has 8 divisors (see below), whose sum is σ = 1233035274240. Its totient is φ = 1230765376848.

The previous prime is 1231900199969. The next prime is 1231900200017. The reversal of 1231900200001 is 1000020091321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231900200001 - 2⁵ = 1231900199969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231900201001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10576855 + ... + 10692691.

It is an arithmetic number, because the mean of its divisors is an integer number (154129409280).

Almost surely, 2^{1231900200001} is an apocalyptic number.

It is an amenable number.

1231900200001 is a deficient number, since it is larger than the sum of its proper divisors (1135074239).

1231900200001 is a wasteful number, since it uses less digits than its factorization.

1231900200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125543.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1231900200001 its reverse (1000020091321), we get a palindrome (2231920291322).

The spelling of 1231900200001 in words is "one trillion, two hundred thirty-one billion, nine hundred million, two hundred thousand, one".