133223232031 has 4 divisors (see below), whose sum is σ = 133651602864. Its totient is φ = 132794861200.

The previous prime is 133223231899. The next prime is 133223232049. The reversal of 133223232031 is 130232322331.

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 133223232031 - 2²³ = 133214843423 is a prime.

It is a super-2 number, since 2×133223232031² (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 = 133223231987 and 133223232005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133223232431) 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 3 ways as a sum of consecutive naturals, for example, 214184950 + ... + 214185571.

It is an arithmetic number, because the mean of its divisors is an integer number (33412900716).

Almost surely, 2^133223232031 is an apocalyptic number.

133223232031 is a deficient number, since it is larger than the sum of its proper divisors (428370833).

133223232031 is an equidigital number, since it uses as much as digits as its factorization.

133223232031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428370832.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 133223232031 its reverse (130232322331), we get a palindrome (263455554362).

The spelling of 133223232031 in words is "one hundred thirty-three billion, two hundred twenty-three million, two hundred thirty-two thousand, thirty-one".