2001230263 has 4 divisors (see below), whose sum is σ = 2035149480. Its totient is φ = 1967311048.

The previous prime is 2001230227. The next prime is 2001230269. The reversal of 2001230263 is 3620321002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001230263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001230263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001230269) 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, 16959520 + ... + 16959637.

It is an arithmetic number, because the mean of its divisors is an integer number (508787370).

Almost surely, 2^2001230263 is an apocalyptic number.

2001230263 is a deficient number, since it is larger than the sum of its proper divisors (33919217).

2001230263 is an equidigital number, since it uses as much as digits as its factorization.

2001230263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33919216.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2001230263 is about 44735.1121938908. The cubic root of 2001230263 is about 1260.1793359839.

Adding to 2001230263 its reverse (3620321002), we get a palindrome (5621551265).

The spelling of 2001230263 in words is "two billion, one million, two hundred thirty thousand, two hundred sixty-three".