133431310033 has 4 divisors (see below), whose sum is σ = 152492925760. Its totient is φ = 114369694308.

The previous prime is 133431310007. The next prime is 133431310063. The reversal of 133431310033 is 330013134331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 330013134331 = 2777 ⋅118838003.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133431310033 is a prime.

It is a super-2 number, since 2×133431310033² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133431310063) 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, 9530807853 + ... + 9530807866.

It is an arithmetic number, because the mean of its divisors is an integer number (38123231440).

Almost surely, 2^133431310033 is an apocalyptic number.

It is an amenable number.

133431310033 is a deficient number, since it is larger than the sum of its proper divisors (19061615727).

133431310033 is an equidigital number, since it uses as much as digits as its factorization.

133431310033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19061615726.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 133431310033 its reverse (330013134331), we get a palindrome (463444444364).

The spelling of 133431310033 in words is "one hundred thirty-three billion, four hundred thirty-one million, three hundred ten thousand, thirty-three".