1319991933523 has 2 divisors, whose sum is σ = 1319991933524. Its totient is φ = 1319991933522.

The previous prime is 1319991933517. The next prime is 1319991933539. The reversal of 1319991933523 is 3253391999131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1319991933523 is a prime.

It is not a weakly prime, because it can be changed into another prime (1319991933503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659995966761 + 659995966762.

It is an arithmetic number, because the mean of its divisors is an integer number (659995966762).

Almost surely, 2^{1319991933523} is an apocalyptic number.

1319991933523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319991933523 is an equidigital number, since it uses as much as digits as its factorization.

1319991933523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5314410, while the sum is 58.

The spelling of 1319991933523 in words is "one trillion, three hundred nineteen billion, nine hundred ninety-one million, nine hundred thirty-three thousand, five hundred twenty-three".