133212530231 has 8 divisors (see below), whose sum is σ = 147705101328. Its totient is φ = 119117016000.

The previous prime is 133212530207. The next prime is 133212530233. The reversal of 133212530231 is 132035212331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133212530231 is a prime.

It is a super-2 number, since 2×133212530231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133212530231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133212530233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99263510 + ... + 99264851.

It is an arithmetic number, because the mean of its divisors is an integer number (18463137666).

Almost surely, 2^133212530231 is an apocalyptic number.

133212530231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133212530231 is a deficient number, since it is larger than the sum of its proper divisors (14492571097).

133212530231 is a wasteful number, since it uses less digits than its factorization.

133212530231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198528433.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 133212530231 its reverse (132035212331), we get a palindrome (265247742562).

The spelling of 133212530231 in words is "one hundred thirty-three billion, two hundred twelve million, five hundred thirty thousand, two hundred thirty-one".