133210031 has 4 divisors (see below), whose sum is σ = 135393864. Its totient is φ = 131026200.

The previous prime is 133210019. The next prime is 133210067. The reversal of 133210031 is 130012331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130012331 = 7151 ⋅18181.

It is a cyclic number.

It is not a de Polignac number, because 133210031 - 2¹⁰ = 133209007 is a prime.

It is a super-3 number, since 3×133210031³ (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 = 133209988 and 133210015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133210331) 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, 1091825 + ... + 1091946.

It is an arithmetic number, because the mean of its divisors is an integer number (33848466).

Almost surely, 2^133210031 is an apocalyptic number.

133210031 is a deficient number, since it is larger than the sum of its proper divisors (2183833).

133210031 is an equidigital number, since it uses as much as digits as its factorization.

133210031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183832.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 133210031 is about 11541.6650012032. The cubic root of 133210031 is about 510.7154267916.

Adding to 133210031 its reverse (130012331), we get a palindrome (263222362).

The spelling of 133210031 in words is "one hundred thirty-three million, two hundred ten thousand, thirty-one".