231201032313133 has 4 divisors (see below), whose sum is σ = 236840081881788. Its totient is φ = 225561982744480.

The previous prime is 231201032313107. The next prime is 231201032313211. The reversal of 231201032313133 is 331313230102132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5869170033769 + 225331862279364 = 2422637^2 + 15011058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231201032313133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231201032313833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2819524784266 + ... + 2819524784347.

It is an arithmetic number, because the mean of its divisors is an integer number (59210020470447).

Almost surely, 2^{231201032313133} is an apocalyptic number.

It is an amenable number.

231201032313133 is a deficient number, since it is larger than the sum of its proper divisors (5639049568655).

231201032313133 is an equidigital number, since it uses as much as digits as its factorization.

231201032313133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5639049568654.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 231201032313133 its reverse (331313230102132), we get a palindrome (562514262415265).

The spelling of 231201032313133 in words is "two hundred thirty-one trillion, two hundred one billion, thirty-two million, three hundred thirteen thousand, one hundred thirty-three".