211230987 has 8 divisors (see below), whose sum is σ = 307245120. Its totient is φ = 128018760.

The previous prime is 211230979. The next prime is 211230997. The reversal of 211230987 is 789032112.

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

It is not a de Polignac number, because 211230987 - 2³ = 211230979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 6400939 = 211230987 / (2 + 1 + 1 + 2 + 3 + 0 + 9 + 8 + 7).

It is not an unprimeable number, because it can be changed into a prime (211230937) 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, 3200437 + ... + 3200502.

It is an arithmetic number, because the mean of its divisors is an integer number (38405640).

Almost surely, 2^211230987 is an apocalyptic number.

211230987 is a deficient number, since it is larger than the sum of its proper divisors (96014133).

211230987 is a wasteful number, since it uses less digits than its factorization.

211230987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6400953.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 211230987 is about 14533.7877719471. The cubic root of 211230987 is about 595.5513445159.

The spelling of 211230987 in words is "two hundred eleven million, two hundred thirty thousand, nine hundred eighty-seven".