29855131 has 2 divisors, whose sum is σ = 29855132. Its totient is φ = 29855130.

The previous prime is 29855117. The next prime is 29855141. The reversal of 29855131 is 13155892.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29855131 - 2⁹ = 29854619 is a prime.

It is a super-2 number, since 2×29855131² = 1782657694054322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (29855101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14927565 + 14927566.

It is an arithmetic number, because the mean of its divisors is an integer number (14927566).

Almost surely, 2^29855131 is an apocalyptic number.

29855131 is a deficient number, since it is larger than the sum of its proper divisors (1).

29855131 is an equidigital number, since it uses as much as digits as its factorization.

29855131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 34.

The square root of 29855131 is about 5463.9849011504. The cubic root of 29855131 is about 310.2222859409. Note that the first 4 decimals are identical.

The spelling of 29855131 in words is "twenty-nine million, eight hundred fifty-five thousand, one hundred thirty-one".