2131212230 has 32 divisors (see below), whose sum is σ = 4439715840. Its totient is φ = 721450080.

The previous prime is 2131212229. The next prime is 2131212277. The reversal of 2131212230 is 322121312.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2131212199 and 2131212208.

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, 187166 + ... + 198225.

It is an arithmetic number, because the mean of its divisors is an integer number (138741120).

Almost surely, 2^2131212230 is an apocalyptic number.

2131212230 is an abundant number, since it is smaller than the sum of its proper divisors (2308503610).

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

2131212230 is a wasteful number, since it uses less digits than its factorization.

2131212230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385484.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2131212230 is about 46165.0542077013. The cubic root of 2131212230 is about 1286.8923915892.

Adding to 2131212230 its reverse (322121312), we get a palindrome (2453333542).

The spelling of 2131212230 in words is "two billion, one hundred thirty-one million, two hundred twelve thousand, two hundred thirty".