2131223210 has 8 divisors (see below), whose sum is σ = 3836201796. Its totient is φ = 852489280.

The previous prime is 2131223209. The next prime is 2131223219. The reversal of 2131223210 is 123221312.

It can be written as a sum of positive squares in 2 ways, for example, as 2097548401 + 33674809 = 45799^2 + 5803^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2131223210² = 9084224741685408200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2131223219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106561151 + ... + 106561170.

Almost surely, 2^2131223210 is an apocalyptic number.

2131223210 is a deficient number, since it is larger than the sum of its proper divisors (1704978586).

2131223210 is a wasteful number, since it uses less digits than its factorization.

2131223210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213122328.

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

The square root of 2131223210 is about 46165.1731286692. The cubic root of 2131223210 is about 1286.8946016075.

Adding to 2131223210 its reverse (123221312), we get a palindrome (2254444522).

The spelling of 2131223210 in words is "two billion, one hundred thirty-one million, two hundred twenty-three thousand, two hundred ten".