211130030988 has 18 divisors (see below), whose sum is σ = 533689800644. Its totient is φ = 70376676984.

The previous prime is 211130030957. The next prime is 211130030999. The reversal of 211130030988 is 889030031112.

211130030988 is a `hidden beast` number, since 211 + 130 + 0 + 309 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×211130030988² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 5864723083 = 211130030988 / (2 + 1 + 1 + 1 + 3 + 0 + 0 + 3 + 0 + 9 + 8 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2932361506 + ... + 2932361577.

Almost surely, 2^211130030988 is an apocalyptic number.

It is an amenable number.

211130030988 is an abundant number, since it is smaller than the sum of its proper divisors (322559769656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211130030988 is a wasteful number, since it uses less digits than its factorization.

211130030988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5864723093 (or 5864723088 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 211130030988 in words is "two hundred eleven billion, one hundred thirty million, thirty thousand, nine hundred eighty-eight".