215136029 has 2 divisors, whose sum is σ = 215136030. Its totient is φ = 215136028.

The previous prime is 215136023. The next prime is 215136041. The reversal of 215136029 is 920631512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107599129 + 107536900 = 10373^2 + 10370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215136029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215135992 and 215136010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215136023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107568014 + 107568015.

It is an arithmetic number, because the mean of its divisors is an integer number (107568015).

Almost surely, 2^215136029 is an apocalyptic number.

It is an amenable number.

215136029 is a deficient number, since it is larger than the sum of its proper divisors (1).

215136029 is an equidigital number, since it uses as much as digits as its factorization.

215136029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 215136029 is about 14667.5161155528. The cubic root of 215136029 is about 599.1989578803.

The spelling of 215136029 in words is "two hundred fifteen million, one hundred thirty-six thousand, twenty-nine".