133210231 has 12 divisors (see below), whose sum is σ = 167339536. Its totient is φ = 103799520.

The previous prime is 133210229. The next prime is 133210243. The reversal of 133210231 is 132012331.

It is not a de Polignac number, because 133210231 - 2¹ = 133210229 is a prime.

It is a super-2 number, since 2×133210231² = 35489931286146722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133210201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77790 + ... + 79483.

Almost surely, 2^133210231 is an apocalyptic number.

133210231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133210231 is a deficient number, since it is larger than the sum of its proper divisors (34129305).

133210231 is a wasteful number, since it uses less digits than its factorization.

133210231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157302 (or 157291 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 133210231 is about 11541.6736654612. The cubic root of 133210231 is about 510.7156823856.

Adding to 133210231 its reverse (132012331), we get a palindrome (265222562).

The spelling of 133210231 in words is "one hundred thirty-three million, two hundred ten thousand, two hundred thirty-one".