133011312331 has 4 divisors (see below), whose sum is σ = 140835507192. Its totient is φ = 125187117472.

The previous prime is 133011312281. The next prime is 133011312367. The reversal of 133011312331 is 133213110331.

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

It is a cyclic number.

It is not a de Polignac number, because 133011312331 - 2⁹ = 133011311819 is a prime.

It is a super-2 number, since 2×133011312331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133011322331) 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, 3912097405 + ... + 3912097438.

It is an arithmetic number, because the mean of its divisors is an integer number (35208876798).

Almost surely, 2^133011312331 is an apocalyptic number.

133011312331 is a deficient number, since it is larger than the sum of its proper divisors (7824194861).

133011312331 is an equidigital number, since it uses as much as digits as its factorization.

133011312331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7824194860.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 133011312331 its reverse (133213110331), we get a palindrome (266224422662).

The spelling of 133011312331 in words is "one hundred thirty-three billion, eleven million, three hundred twelve thousand, three hundred thirty-one".