2031312210 has 32 divisors (see below), whose sum is σ = 5006912832. Its totient is φ = 527042880.

The previous prime is 2031312181. The next prime is 2031312233. The reversal of 2031312210 is 122131302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031312210.

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, 913896 + ... + 916115.

It is an arithmetic number, because the mean of its divisors is an integer number (156466026).

Almost surely, 2^2031312210 is an apocalyptic number.

2031312210 is an abundant number, since it is smaller than the sum of its proper divisors (2975600622).

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

2031312210 is a wasteful number, since it uses less digits than its factorization.

2031312210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830058.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2031312210 is about 45070.0810959998. The cubic root of 2031312210 is about 1266.4621835964.

Adding to 2031312210 its reverse (122131302), we get a palindrome (2153443512).

It can be divided in two parts, 20313 and 12210, that added together give a palindrome (32523).

The spelling of 2031312210 in words is "two billion, thirty-one million, three hundred twelve thousand, two hundred ten".