2003112345 has 16 divisors (see below), whose sum is σ = 3451516992. Its totient is φ = 986147520.

The previous prime is 2003112313. The next prime is 2003112437. The reversal of 2003112345 is 5432113002.

It is not a de Polignac number, because 2003112345 - 2⁵ = 2003112313 is a prime.

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, 5135991 + ... + 5136380.

It is an arithmetic number, because the mean of its divisors is an integer number (215719812).

Almost surely, 2^2003112345 is an apocalyptic number.

It is an amenable number.

2003112345 is a deficient number, since it is larger than the sum of its proper divisors (1448404647).

2003112345 is a wasteful number, since it uses less digits than its factorization.

2003112345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10272392.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2003112345 is about 44756.1430979033. The cubic root of 2003112345 is about 1260.5742626714.

Adding to 2003112345 its reverse (5432113002), we get a palindrome (7435225347).

The spelling of 2003112345 in words is "two billion, three million, one hundred twelve thousand, three hundred forty-five".