1233203401 has 4 divisors (see below), whose sum is σ = 1242913792. Its totient is φ = 1223493012.

The previous prime is 1233203399. The next prime is 1233203423. The reversal of 1233203401 is 1043023321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1043023321 = 17 ⋅61354313.

It is a cyclic number.

It is not a de Polignac number, because 1233203401 - 2¹ = 1233203399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1233203441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4855005 + ... + 4855258.

It is an arithmetic number, because the mean of its divisors is an integer number (310728448).

Almost surely, 2^1233203401 is an apocalyptic number.

It is an amenable number.

1233203401 is a deficient number, since it is larger than the sum of its proper divisors (9710391).

1233203401 is an equidigital number, since it uses as much as digits as its factorization.

1233203401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9710390.

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

The square root of 1233203401 is about 35116.9958994217. The cubic root of 1233203401 is about 1072.3706140520.

Adding to 1233203401 its reverse (1043023321), we get a palindrome (2276226722).

The spelling of 1233203401 in words is "one billion, two hundred thirty-three million, two hundred three thousand, four hundred one".