29931157 has 2 divisors, whose sum is σ = 29931158. Its totient is φ = 29931156.

The previous prime is 29931149. The next prime is 29931163. The reversal of 29931157 is 75113992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26687556 + 3243601 = 5166^2 + 1801^2 .

It is a cyclic number.

It is not a de Polignac number, because 29931157 - 2³ = 29931149 is a prime.

It is a Chen prime.

It is equal to p_1853794 and since 29931157 and 1853794 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29932157) 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, 14965578 + 14965579.

It is an arithmetic number, because the mean of its divisors is an integer number (14965579).

Almost surely, 2^29931157 is an apocalyptic number.

It is an amenable number.

29931157 is a deficient number, since it is larger than the sum of its proper divisors (1).

29931157 is an equidigital number, since it uses as much as digits as its factorization.

29931157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 37.

The square root of 29931157 is about 5470.9374882190. The cubic root of 29931157 is about 310.4853894379.

The spelling of 29931157 in words is "twenty-nine million, nine hundred thirty-one thousand, one hundred fifty-seven".