29911213 has 8 divisors (see below), whose sum is σ = 30336768. Its totient is φ = 29488704.

The previous prime is 29911199. The next prime is 29911237. The reversal of 29911213 is 31211992.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29911213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29911283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24606 + ... + 25792.

It is an arithmetic number, because the mean of its divisors is an integer number (3792096).

Almost surely, 2^29911213 is an apocalyptic number.

It is an amenable number.

29911213 is a deficient number, since it is larger than the sum of its proper divisors (425555).

29911213 is a wasteful number, since it uses less digits than its factorization.

29911213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523.

The product of its digits is 972, while the sum is 28.

The square root of 29911213 is about 5469.1144621410. The cubic root of 29911213 is about 310.4164123015.

The spelling of 29911213 in words is "twenty-nine million, nine hundred eleven thousand, two hundred thirteen".