29312081 has 8 divisors (see below), whose sum is σ = 30643200. Its totient is φ = 28005120.

The previous prime is 29312071. The next prime is 29312083. The reversal of 29312081 is 18021392.

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 29312081 - 2¹⁰ = 29311057 is a prime.

It is a super-2 number, since 2×29312081² = 1718396185101122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29312081.

It is not an unprimeable number, because it can be changed into a prime (29312083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3536 + ... + 8433.

It is an arithmetic number, because the mean of its divisors is an integer number (3830400).

Almost surely, 2^29312081 is an apocalyptic number.

It is an amenable number.

29312081 is a deficient number, since it is larger than the sum of its proper divisors (1331119).

29312081 is a wasteful number, since it uses less digits than its factorization.

29312081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12079.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 29312081 is about 5414.0632615440. The cubic root of 29312081 is about 308.3298351360.

The spelling of 29312081 in words is "twenty-nine million, three hundred twelve thousand, eighty-one".