2120312003 has 8 divisors (see below), whose sum is σ = 2196541200. Its totient is φ = 2044290528.

The previous prime is 2120311997. The next prime is 2120312009. The reversal of 2120312003 is 3002130212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2120311997) and next prime (2120312009).

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

It is a cyclic number.

It is not a de Polignac number, because 2120312003 - 2⁸ = 2120311747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2120312009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31001 + ... + 72122.

It is an arithmetic number, because the mean of its divisors is an integer number (274567650).

Almost surely, 2^2120312003 is an apocalyptic number.

2120312003 is a deficient number, since it is larger than the sum of its proper divisors (76229197).

2120312003 is a wasteful number, since it uses less digits than its factorization.

2120312003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103861.

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

The square root of 2120312003 is about 46046.8457443070. The cubic root of 2120312003 is about 1284.6946748933.

Adding to 2120312003 its reverse (3002130212), we get a palindrome (5122442215).

The spelling of 2120312003 in words is "two billion, one hundred twenty million, three hundred twelve thousand, three".