133231300331 has 4 divisors (see below), whose sum is σ = 133236952464. Its totient is φ = 133225648200.

The previous prime is 133231300327. The next prime is 133231300343. The reversal of 133231300331 is 133003132331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133003132331 = 163 ⋅815970137.

It is a cyclic number.

It is not a de Polignac number, because 133231300331 - 2² = 133231300327 is a prime.

It is a super-2 number, since 2×133231300331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133231300297 and 133231300306.

It is not an unprimeable number, because it can be changed into a prime (133231300361) 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, 2790560 + ... + 2837901.

It is an arithmetic number, because the mean of its divisors is an integer number (33309238116).

Almost surely, 2^133231300331 is an apocalyptic number.

133231300331 is a deficient number, since it is larger than the sum of its proper divisors (5652133).

133231300331 is an equidigital number, since it uses as much as digits as its factorization.

133231300331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5652132.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 133231300331 its reverse (133003132331), we get a palindrome (266234432662).

The spelling of 133231300331 in words is "one hundred thirty-three billion, two hundred thirty-one million, three hundred thousand, three hundred thirty-one".