211131100030 has 32 divisors (see below), whose sum is σ = 386344391040. Its totient is φ = 83058892800.

The previous prime is 211131100009. The next prime is 211131100051. The reversal of 211131100030 is 30001131112.

It is an interprime number because it is at equal distance from previous prime (211131100009) and next prime (211131100051).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316921 + ... + 722980.

It is an arithmetic number, because the mean of its divisors is an integer number (12073262220).

Almost surely, 2^211131100030 is an apocalyptic number.

211131100030 is a deficient number, since it is larger than the sum of its proper divisors (175213291010).

211131100030 is a wasteful number, since it uses less digits than its factorization.

211131100030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040244.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 211131100030 its reverse (30001131112), we get a palindrome (241132231142).

The spelling of 211131100030 in words is "two hundred eleven billion, one hundred thirty-one million, one hundred thousand, thirty".