1403231243 has 4 divisors (see below), whose sum is σ = 1403488608. Its totient is φ = 1402973880.

The previous prime is 1403231239. The next prime is 1403231257. The reversal of 1403231243 is 3421323041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3421323041 = 67 ⋅51064523.

It is a cyclic number.

It is not a de Polignac number, because 1403231243 - 2² = 1403231239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1403231143) 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, 120323 + ... + 131468.

It is an arithmetic number, because the mean of its divisors is an integer number (350872152).

Almost surely, 2^1403231243 is an apocalyptic number.

1403231243 is a deficient number, since it is larger than the sum of its proper divisors (257365).

1403231243 is an equidigital number, since it uses as much as digits as its factorization.

1403231243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257364.

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

The square root of 1403231243 is about 37459.7282825169. The cubic root of 1403231243 is about 1119.5489369349.

Adding to 1403231243 its reverse (3421323041), we get a palindrome (4824554284).

The spelling of 1403231243 in words is "one billion, four hundred three million, two hundred thirty-one thousand, two hundred forty-three".