133223031 has 6 divisors (see below), whose sum is σ = 192433280. Its totient is φ = 88815348.

The previous prime is 133223009. The next prime is 133223039. The reversal of 133223031 is 130322331.

It is not a de Polignac number, because 133223031 - 2⁶ = 133222967 is a prime.

It is a super-3 number, since 3×133223031³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133222995 and 133223013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133223039) 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 5 ways as a sum of consecutive naturals, for example, 7401271 + ... + 7401288.

Almost surely, 2^133223031 is an apocalyptic number.

133223031 is a deficient number, since it is larger than the sum of its proper divisors (59210249).

133223031 is a wasteful number, since it uses less digits than its factorization.

133223031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14802565 (or 14802562 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 133223031 is about 11542.2281644403. The cubic root of 133223031 is about 510.7320398663.

Adding to 133223031 its reverse (130322331), we get a palindrome (263545362).

The spelling of 133223031 in words is "one hundred thirty-three million, two hundred twenty-three thousand, thirty-one".