29431130 has 8 divisors (see below), whose sum is σ = 52976052. Its totient is φ = 11772448.

The previous prime is 29431123. The next prime is 29431139. The reversal of 29431130 is 3113492.

It can be written as a sum of positive squares in 2 ways, for example, as 29408929 + 22201 = 5423^2 + 149^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 29431096 and 29431105.

It is not an unprimeable number, because it can be changed into a prime (29431139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1471547 + ... + 1471566.

Almost surely, 2^29431130 is an apocalyptic number.

29431130 is a deficient number, since it is larger than the sum of its proper divisors (23544922).

29431130 is a wasteful number, since it uses less digits than its factorization.

29431130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2943120.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 29431130 is about 5425.0465435791. The cubic root of 29431130 is about 308.7466914363.

The spelling of 29431130 in words is "twenty-nine million, four hundred thirty-one thousand, one hundred thirty".