2001232403 has 2 divisors, whose sum is σ = 2001232404. Its totient is φ = 2001232402.

The previous prime is 2001232393. The next prime is 2001232417. The reversal of 2001232403 is 3042321002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001232403 - 2³⁰ = 927490579 is a prime.

It is a super-2 number, since 2×2001232403² = 8009862261634308818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2001232433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000616201 + 1000616202.

It is an arithmetic number, because the mean of its divisors is an integer number (1000616202).

Almost surely, 2^2001232403 is an apocalyptic number.

2001232403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001232403 is an equidigital number, since it uses as much as digits as its factorization.

2001232403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2001232403 is about 44735.1361124564. The cubic root of 2001232403 is about 1260.1797851714.

Adding to 2001232403 its reverse (3042321002), we get a palindrome (5043553405).

The spelling of 2001232403 in words is "two billion, one million, two hundred thirty-two thousand, four hundred three".