133331013 has 6 divisors (see below), whose sum is σ = 192589254. Its totient is φ = 88887336.

The previous prime is 133330997. The next prime is 133331041. The reversal of 133331013 is 310133331.

It can be written as a sum of positive squares in only one way, i.e., 118330884 + 15000129 = 10878^2 + 3873^2 .

It is not a de Polignac number, because 133331013 - 2⁴ = 133330997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133331083) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7407270 + ... + 7407287.

It is an arithmetic number, because the mean of its divisors is an integer number (32098209).

Almost surely, 2^133331013 is an apocalyptic number.

It is an amenable number.

133331013 is a deficient number, since it is larger than the sum of its proper divisors (59258241).

133331013 is a wasteful number, since it uses less digits than its factorization.

133331013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14814563 (or 14814560 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 18.

The square root of 133331013 is about 11546.9049099748. The cubic root of 133331013 is about 510.8699914230.

Adding to 133331013 its reverse (310133331), we get a palindrome (443464344).

The spelling of 133331013 in words is "one hundred thirty-three million, three hundred thirty-one thousand, thirteen".