1231413203 has 2 divisors, whose sum is σ = 1231413204. Its totient is φ = 1231413202.

The previous prime is 1231413143. The next prime is 1231413223. The reversal of 1231413203 is 3023141321.

It is an a-pointer prime, because the next prime (1231413223) can be obtained adding 1231413203 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231413203 - 2²⁴ = 1214635987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231413223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615706601 + 615706602.

It is an arithmetic number, because the mean of its divisors is an integer number (615706602).

Almost surely, 2^1231413203 is an apocalyptic number.

1231413203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231413203 is an equidigital number, since it uses as much as digits as its factorization.

1231413203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1231413203 is about 35091.4975884473. The cubic root of 1231413203 is about 1071.8514551892.

Adding to 1231413203 its reverse (3023141321), we get a palindrome (4254554524).

The spelling of 1231413203 in words is "one billion, two hundred thirty-one million, four hundred thirteen thousand, two hundred three".