29311397 has 4 divisors (see below), whose sum is σ = 29361420. Its totient is φ = 29261376.

The previous prime is 29311379. The next prime is 29311441. The reversal of 29311397 is 79311392.

It is a Cunningham number, because it is equal to 5414²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18028516 + 11282881 = 4246^2 + 3359^2 .

It is a cyclic number.

It is not a de Polignac number, because 29311397 - 2⁶ = 29311333 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 (29311327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24122 + ... + 25307.

It is an arithmetic number, because the mean of its divisors is an integer number (7340355).

Almost surely, 2^29311397 is an apocalyptic number.

It is an amenable number.

29311397 is a deficient number, since it is larger than the sum of its proper divisors (50023).

29311397 is an equidigital number, since it uses as much as digits as its factorization.

29311397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50022.

The product of its digits is 10206, while the sum is 35.

The square root of 29311397 is about 5414.0000923532. Note that the first 4 decimals coincide. The cubic root of 29311397 is about 308.3274368161.

The spelling of 29311397 in words is "twenty-nine million, three hundred eleven thousand, three hundred ninety-seven".