211031130 has 16 divisors (see below), whose sum is σ = 506474784. Its totient is φ = 56274960.

The previous prime is 211031123. The next prime is 211031137. The reversal of 211031130 is 31130112.

It is an interprime number because it is at equal distance from previous prime (211031123) and next prime (211031137).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211031137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3517156 + ... + 3517215.

It is an arithmetic number, because the mean of its divisors is an integer number (31654674).

Almost surely, 2^211031130 is an apocalyptic number.

211031130 is an abundant number, since it is smaller than the sum of its proper divisors (295443654).

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

211031130 is a wasteful number, since it uses less digits than its factorization.

211031130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7034381.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 211031130 is about 14526.9105456047. The cubic root of 211031130 is about 595.3634575252.

Adding to 211031130 its reverse (31130112), we get a palindrome (242161242).

The spelling of 211031130 in words is "two hundred eleven million, thirty-one thousand, one hundred thirty".