1523311311947 has 2 divisors, whose sum is σ = 1523311311948. Its totient is φ = 1523311311946.

The previous prime is 1523311311931. The next prime is 1523311311953. The reversal of 1523311311947 is 7491131133251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1523311311947 - 2⁴ = 1523311311931 is a prime.

It is not a weakly prime, because it can be changed into another prime (1523311361947) 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 as a sum of consecutive naturals, namely, 761655655973 + 761655655974.

It is an arithmetic number, because the mean of its divisors is an integer number (761655655974).

Almost surely, 2^{1523311311947} is an apocalyptic number.

1523311311947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1523311311947 is an equidigital number, since it uses as much as digits as its factorization.

1523311311947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 41.

The spelling of 1523311311947 in words is "one trillion, five hundred twenty-three billion, three hundred eleven million, three hundred eleven thousand, nine hundred forty-seven".