2001012310 has 64 divisors (see below), whose sum is σ = 4106640384. Its totient is φ = 695520000.

The previous prime is 2001012269. The next prime is 2001012313. The reversal of 2001012310 is 132101002.

It is a super-2 number, since 2×2001012310² = 8008100529543072200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001012313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217810 + ... + 226810.

It is an arithmetic number, because the mean of its divisors is an integer number (64166256).

Almost surely, 2^2001012310 is an apocalyptic number.

2001012310 is an abundant number, since it is smaller than the sum of its proper divisors (2105628074).

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

2001012310 is a wasteful number, since it uses less digits than its factorization.

2001012310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9109.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2001012310 is about 44732.6760880679. The cubic root of 2001012310 is about 1260.1335858199.

Adding to 2001012310 its reverse (132101002), we get a palindrome (2133113312).

The spelling of 2001012310 in words is "two billion, one million, twelve thousand, three hundred ten".