2131123210 has 48 divisors (see below), whose sum is σ = 3986330976. Its totient is φ = 820260000.

The previous prime is 2131123207. The next prime is 2131123223. The reversal of 2131123210 is 123211312.

It is a super-2 number, since 2×2131123210² = 9083372272401408200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2027185 + ... + 2028235.

It is an arithmetic number, because the mean of its divisors is an integer number (83048562).

Almost surely, 2^2131123210 is an apocalyptic number.

2131123210 is a deficient number, since it is larger than the sum of its proper divisors (1855207766).

2131123210 is a wasteful number, since it uses less digits than its factorization.

2131123210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331 (or 1300 counting only the distinct ones).

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

The square root of 2131123210 is about 46164.0900484348. The cubic root of 2131123210 is about 1286.8744736559.

Adding to 2131123210 its reverse (123211312), we get a palindrome (2254334522).

It can be divided in two parts, 21311 and 23210, that added together give a square (44521 = 211²).

The spelling of 2131123210 in words is "two billion, one hundred thirty-one million, one hundred twenty-three thousand, two hundred ten".