1233401243 has 4 divisors (see below), whose sum is σ = 1287027408. Its totient is φ = 1179775080.

The previous prime is 1233401231. The next prime is 1233401261. The reversal of 1233401243 is 3421043321.

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

It is a cyclic number.

It is not a de Polignac number, because 1233401243 - 2¹⁶ = 1233335707 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 53626141 = 1233401243 / (1 + 2 + 3 + 3 + 4 + 0 + 1 + 2 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1233401443) 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, 26813048 + ... + 26813093.

It is an arithmetic number, because the mean of its divisors is an integer number (321756852).

Almost surely, 2^1233401243 is an apocalyptic number.

1233401243 is a deficient number, since it is larger than the sum of its proper divisors (53626165).

1233401243 is an equidigital number, since it uses as much as digits as its factorization.

1233401243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53626164.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1233401243 is about 35119.8126845802. The cubic root of 1233401243 is about 1072.4279575533.

Adding to 1233401243 its reverse (3421043321), we get a palindrome (4654444564).

The spelling of 1233401243 in words is "one billion, two hundred thirty-three million, four hundred one thousand, two hundred forty-three".