133320231231 has 48 divisors (see below), whose sum is σ = 207999936768. Its totient is φ = 75308313600.

The previous prime is 133320231229. The next prime is 133320231281. The reversal of 133320231231 is 132132023331.

It is not a de Polignac number, because 133320231231 - 2¹ = 133320231229 is a prime.

It is a super-2 number, since 2×133320231231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133320231211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 914451 + ... + 1050171.

It is an arithmetic number, because the mean of its divisors is an integer number (4333332016).

Almost surely, 2^133320231231 is an apocalyptic number.

133320231231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133320231231 is a deficient number, since it is larger than the sum of its proper divisors (74679705537).

133320231231 is a wasteful number, since it uses less digits than its factorization.

133320231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135872 (or 135855 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 133320231231 its reverse (132132023331), we get a palindrome (265452254562).

The spelling of 133320231231 in words is "one hundred thirty-three billion, three hundred twenty million, two hundred thirty-one thousand, two hundred thirty-one".