211331130 has 64 divisors (see below), whose sum is σ = 532776960. Its totient is φ = 53545536.

The previous prime is 211331117. The next prime is 211331143. The reversal of 211331130 is 31133112.

It is an interprime number because it is at equal distance from previous prime (211331117) and next prime (211331143).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111531 + ... + 113409.

It is an arithmetic number, because the mean of its divisors is an integer number (8324640).

Almost surely, 2^211331130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211331130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266388480).

211331130 is an abundant number, since it is smaller than the sum of its proper divisors (321445830).

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

211331130 is a wasteful number, since it uses less digits than its factorization.

211331130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 211331130 is about 14537.2325426816. The cubic root of 211331130 is about 595.6454450968.

Adding to 211331130 its reverse (31133112), we get a palindrome (242464242).

The spelling of 211331130 in words is "two hundred eleven million, three hundred thirty-one thousand, one hundred thirty".