133213031 has 8 divisors (see below), whose sum is σ = 152807424. Its totient is φ = 113759640.

The previous prime is 133212949. The next prime is 133213043. The reversal of 133213031 is 130312331.

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 133213031 - 2²⁶ = 66104167 is a prime.

It is a super-2 number, since 2×133213031² = 35491423256413922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133213051) 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, 33215 + ... + 37008.

It is an arithmetic number, because the mean of its divisors is an integer number (19100928).

Almost surely, 2^133213031 is an apocalyptic number.

133213031 is a deficient number, since it is larger than the sum of its proper divisors (19594393).

133213031 is an equidigital number, since it uses as much as digits as its factorization.

133213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70501.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 133213031 is about 11541.7949643892. The cubic root of 133213031 is about 510.7192606740.

Adding to 133213031 its reverse (130312331), we get a palindrome (263525362).

The spelling of 133213031 in words is "one hundred thirty-three million, two hundred thirteen thousand, thirty-one".