2001230312 has 8 divisors (see below), whose sum is σ = 3752306850. Its totient is φ = 1000615152.

The previous prime is 2001230311. The next prime is 2001230369. The reversal of 2001230312 is 2130321002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1509011716 + 492218596 = 38846^2 + 22186^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2001230311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125076887 + ... + 125076902.

Almost surely, 2^2001230312 is an apocalyptic number.

It is an amenable number.

2001230312 is a deficient number, since it is larger than the sum of its proper divisors (1751076538).

2001230312 is a wasteful number, since it uses less digits than its factorization.

2001230312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250153795 (or 250153791 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2001230312 is about 44735.1127415591. The cubic root of 2001230312 is about 1260.1793462690.

Adding to 2001230312 its reverse (2130321002), we get a palindrome (4131551314).

The spelling of 2001230312 in words is "two billion, one million, two hundred thirty thousand, three hundred twelve".