133213231231 has 8 divisors (see below), whose sum is σ = 134934206400. Its totient is φ = 131497238400.

The previous prime is 133213231189. The next prime is 133213231253. The reversal of 133213231231 is 132132312331.

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

It is a cyclic number.

It is not a de Polignac number, because 133213231231 - 2⁷ = 133213231103 is a prime.

It is a super-2 number, since 2×133213231231² (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 = 133213231196 and 133213231205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133213231331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1191751 + ... + 1298728.

It is an arithmetic number, because the mean of its divisors is an integer number (16866775800).

Almost surely, 2^133213231231 is an apocalyptic number.

133213231231 is a deficient number, since it is larger than the sum of its proper divisors (1720975169).

133213231231 is an equidigital number, since it uses as much as digits as its factorization.

133213231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491169.

The product of its digits is 1944, while the sum is 25.

Adding to 133213231231 its reverse (132132312331), we get a palindrome (265345543562).

The spelling of 133213231231 in words is "one hundred thirty-three billion, two hundred thirteen million, two hundred thirty-one thousand, two hundred thirty-one".