29220031 has 2 divisors, whose sum is σ = 29220032. Its totient is φ = 29220030.

The previous prime is 29220029. The next prime is 29220053. The reversal of 29220031 is 13002292.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29220031 - 2¹ = 29220029 is a prime.

It is a super-2 number, since 2×29220031² = 1707620423281922, which contains 22 as substring.

Together with 29220029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 29219990 and 29220008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29220001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14610015 + 14610016.

It is an arithmetic number, because the mean of its divisors is an integer number (14610016).

Almost surely, 2^29220031 is an apocalyptic number.

29220031 is a deficient number, since it is larger than the sum of its proper divisors (1).

29220031 is an equidigital number, since it uses as much as digits as its factorization.

29220031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 29220031 is about 5405.5555681169. Note that the first 4 decimals coincide. The cubic root of 29220031 is about 308.0067428388.

The spelling of 29220031 in words is "twenty-nine million, two hundred twenty thousand, thirty-one".