29885431 has 2 divisors, whose sum is σ = 29885432. Its totient is φ = 29885430.

The previous prime is 29885419. The next prime is 29885437. The reversal of 29885431 is 13458892.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29885431 is a prime.

It is a super-2 number, since 2×29885431² = 1786277972111522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29885437) 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 as a sum of consecutive naturals, namely, 14942715 + 14942716.

It is an arithmetic number, because the mean of its divisors is an integer number (14942716).

Almost surely, 2^29885431 is an apocalyptic number.

29885431 is a deficient number, since it is larger than the sum of its proper divisors (1).

29885431 is an equidigital number, since it uses as much as digits as its factorization.

29885431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The square root of 29885431 is about 5466.7568996618. The cubic root of 29885431 is about 310.3271987516.

The spelling of 29885431 in words is "twenty-nine million, eight hundred eighty-five thousand, four hundred thirty-one".