29131147 has 4 divisors (see below), whose sum is σ = 29168496. Its totient is φ = 29093800.

The previous prime is 29131111. The next prime is 29131163. The reversal of 29131147 is 74113192.

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

It is a cyclic number.

It is not a de Polignac number, because 29131147 - 2⁷ = 29131019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29131177) 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, 17479 + ... + 19072.

It is an arithmetic number, because the mean of its divisors is an integer number (7292124).

Almost surely, 2^29131147 is an apocalyptic number.

29131147 is a deficient number, since it is larger than the sum of its proper divisors (37349).

29131147 is an equidigital number, since it uses as much as digits as its factorization.

29131147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37348.

The product of its digits is 1512, while the sum is 28.

The square root of 29131147 is about 5397.3277647369. The cubic root of 29131147 is about 307.6941185134.

The spelling of 29131147 in words is "twenty-nine million, one hundred thirty-one thousand, one hundred forty-seven".