29981703 has 4 divisors (see below), whose sum is σ = 39975608. Its totient is φ = 19987800.

The previous prime is 29981671. The next prime is 29981711. The reversal of 29981703 is 30718992.

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

It is not a de Polignac number, because 29981703 - 2⁵ = 29981671 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 (29981713) 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 3 ways as a sum of consecutive naturals, for example, 4996948 + ... + 4996953.

It is an arithmetic number, because the mean of its divisors is an integer number (9993902).

Almost surely, 2^29981703 is an apocalyptic number.

29981703 is a deficient number, since it is larger than the sum of its proper divisors (9993905).

29981703 is an equidigital number, since it uses as much as digits as its factorization.

29981703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9993904.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 29981703 is about 5475.5550403589. Note that the first 3 decimals coincide. The cubic root of 29981703 is about 310.6600677117.

The spelling of 29981703 in words is "twenty-nine million, nine hundred eighty-one thousand, seven hundred three".