1231353457303 has 2 divisors, whose sum is σ = 1231353457304. Its totient is φ = 1231353457302.

The previous prime is 1231353457261. The next prime is 1231353457351. The reversal of 1231353457303 is 3037543531321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1231353457303 - 2²⁵ = 1231319902871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231353457393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615676728651 + 615676728652.

It is an arithmetic number, because the mean of its divisors is an integer number (615676728652).

Almost surely, 2^{1231353457303} is an apocalyptic number.

1231353457303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231353457303 is an equidigital number, since it uses as much as digits as its factorization.

1231353457303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 40.

Adding to 1231353457303 its reverse (3037543531321), we get a palindrome (4268896988624).

The spelling of 1231353457303 in words is "one trillion, two hundred thirty-one billion, three hundred fifty-three million, four hundred fifty-seven thousand, three hundred three".