212961187 has 8 divisors (see below), whose sum is σ = 217097712. Its totient is φ = 208845600.

The previous prime is 212961143. The next prime is 212961191. The reversal of 212961187 is 781169212.

212961187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212961187 - 2²³ = 204572579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212961107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16137 + ... + 26197.

It is an arithmetic number, because the mean of its divisors is an integer number (27137214).

Almost surely, 2^212961187 is an apocalyptic number.

212961187 is a deficient number, since it is larger than the sum of its proper divisors (4136525).

212961187 is a wasteful number, since it uses less digits than its factorization.

212961187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10469.

The product of its digits is 12096, while the sum is 37.

The square root of 212961187 is about 14593.1897472760. The cubic root of 212961187 is about 597.1729851577.

The spelling of 212961187 in words is "two hundred twelve million, nine hundred sixty-one thousand, one hundred eighty-seven".