1303431411523 has 4 divisors (see below), whose sum is σ = 1303466084488. Its totient is φ = 1303396738560.

The previous prime is 1303431411511. The next prime is 1303431411563. The reversal of 1303431411523 is 3251141343031.

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 1303431411523 - 2²¹ = 1303429314371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303431411563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17280033 + ... + 17355298.

It is an arithmetic number, because the mean of its divisors is an integer number (325866521122).

Almost surely, 2^{1303431411523} is an apocalyptic number.

1303431411523 is a deficient number, since it is larger than the sum of its proper divisors (34672965).

1303431411523 is an equidigital number, since it uses as much as digits as its factorization.

1303431411523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34672964.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 1303431411523 its reverse (3251141343031), we get a palindrome (4554572754554).

The spelling of 1303431411523 in words is "one trillion, three hundred three billion, four hundred thirty-one million, four hundred eleven thousand, five hundred twenty-three".