1231144032201 has 8 divisors (see below), whose sum is σ = 1641530628864. Its totient is φ = 820760061840.

The previous prime is 1231144032187. The next prime is 1231144032257. The reversal of 1231144032201 is 1022304411321.

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

It is not a de Polignac number, because 1231144032201 - 2¹³ = 1231144024009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231144032271) 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 7 ways as a sum of consecutive naturals, for example, 1137775 + ... + 1938251.

It is an arithmetic number, because the mean of its divisors is an integer number (205191328608).

Almost surely, 2^{1231144032201} is an apocalyptic number.

It is an amenable number.

1231144032201 is a deficient number, since it is larger than the sum of its proper divisors (410386596663).

1231144032201 is an equidigital number, since it uses as much as digits as its factorization.

1231144032201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313151.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1231144032201 its reverse (1022304411321), we get a palindrome (2253448443522).

The spelling of 1231144032201 in words is "one trillion, two hundred thirty-one billion, one hundred forty-four million, thirty-two thousand, two hundred one".