33081013 has 16 divisors (see below), whose sum is σ = 38625280. Its totient is φ = 27748656.

The previous prime is 33081007. The next prime is 33081029. The reversal of 33081013 is 31018033.

It is a cyclic number.

It is not a de Polignac number, because 33081013 - 2⁵ = 33080981 is a prime.

It is a super-2 number, since 2×33081013² = 2188706842212338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33081053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89956 + ... + 90322.

It is an arithmetic number, because the mean of its divisors is an integer number (2414080).

Almost surely, 2^33081013 is an apocalyptic number.

It is an amenable number.

33081013 is a deficient number, since it is larger than the sum of its proper divisors (5544267).

33081013 is a wasteful number, since it uses less digits than its factorization.

33081013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 33081013 is about 5751.6096007987. The cubic root of 33081013 is about 321.0156952500.

Adding to 33081013 its reverse (31018033), we get a palindrome (64099046).

The spelling of 33081013 in words is "thirty-three million, eighty-one thousand, thirteen".