133431311203 has 4 divisors (see below), whose sum is σ = 141280211880. Its totient is φ = 125582410528.

The previous prime is 133431311183. The next prime is 133431311231. The reversal of 133431311203 is 302113134331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302113134331 = 17 ⋅17771360843.

It is a cyclic number.

It is not a de Polignac number, because 133431311203 - 2⁵ = 133431311171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133431311263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3924450313 + ... + 3924450346.

It is an arithmetic number, because the mean of its divisors is an integer number (35320052970).

Almost surely, 2^133431311203 is an apocalyptic number.

133431311203 is a deficient number, since it is larger than the sum of its proper divisors (7848900677).

133431311203 is an equidigital number, since it uses as much as digits as its factorization.

133431311203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7848900676.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 133431311203 its reverse (302113134331), we get a palindrome (435544445534).

The spelling of 133431311203 in words is "one hundred thirty-three billion, four hundred thirty-one million, three hundred eleven thousand, two hundred three".