2131121230 has 24 divisors (see below), whose sum is σ = 4462307928. Its totient is φ = 730669968.

The previous prime is 2131121221. The next prime is 2131121249. The reversal of 2131121230 is 321211312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2174124 + ... + 2175103.

It is an arithmetic number, because the mean of its divisors is an integer number (185929497).

Almost surely, 2^2131121230 is an apocalyptic number.

2131121230 is an abundant number, since it is smaller than the sum of its proper divisors (2331186698).

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

2131121230 is a wasteful number, since it uses less digits than its factorization.

2131121230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349248 (or 4349241 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2131121230 is about 46164.0686031896. The cubic root of 2131121230 is about 1286.8740751161.

Adding to 2131121230 its reverse (321211312), we get a palindrome (2452332542).

The spelling of 2131121230 in words is "two billion, one hundred thirty-one million, one hundred twenty-one thousand, two hundred thirty".