29142831 has 4 divisors (see below), whose sum is σ = 38857112. Its totient is φ = 19428552.

The previous prime is 29142809. The next prime is 29142833. The reversal of 29142831 is 13824192.

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

It is not a de Polignac number, because 29142831 - 2⁷ = 29142703 is a prime.

It is a super-2 number, since 2×29142831² = 1698609197389122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29142833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4857136 + ... + 4857141.

It is an arithmetic number, because the mean of its divisors is an integer number (9714278).

Almost surely, 2^29142831 is an apocalyptic number.

29142831 is a deficient number, since it is larger than the sum of its proper divisors (9714281).

29142831 is an equidigital number, since it uses as much as digits as its factorization.

29142831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9714280.

The product of its digits is 3456, while the sum is 30.

The square root of 29142831 is about 5398.4100437073. The cubic root of 29142831 is about 307.7352499473.

The spelling of 29142831 in words is "twenty-nine million, one hundred forty-two thousand, eight hundred thirty-one".