210307149 has 54 divisors (see below), whose sum is σ = 341419806. Its totient is φ = 124675200.

The previous prime is 210307133. The next prime is 210307157. The reversal of 210307149 is 941703012.

210307149 is a `hidden beast` number, since 210 + 307 + 149 = 666.

It can be written as a sum of positive squares in 9 ways, for example, as 260100 + 210047049 = 510^2 + 14493^2 .

It is not a de Polignac number, because 210307149 - 2⁴ = 210307133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210307129) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 2082199 + ... + 2082299.

It is an arithmetic number, because the mean of its divisors is an integer number (6322589).

Almost surely, 2^210307149 is an apocalyptic number.

It is an amenable number.

210307149 is a deficient number, since it is larger than the sum of its proper divisors (131112657).

210307149 is a wasteful number, since it uses less digits than its factorization.

210307149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 210307149 is about 14501.9705212774. The cubic root of 210307149 is about 594.6818429466.

The spelling of 210307149 in words is "two hundred ten million, three hundred seven thousand, one hundred forty-nine".