1313188823 has 2 divisors, whose sum is σ = 1313188824. Its totient is φ = 1313188822.

The previous prime is 1313188777. The next prime is 1313188831. The reversal of 1313188823 is 3288813131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1313188823 - 2¹⁸ = 1312926679 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313188873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656594411 + 656594412.

It is an arithmetic number, because the mean of its divisors is an integer number (656594412).

Almost surely, 2^1313188823 is an apocalyptic number.

1313188823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313188823 is an equidigital number, since it uses as much as digits as its factorization.

1313188823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 38.

The square root of 1313188823 is about 36237.9472790609. The cubic root of 1313188823 is about 1095.0712888402.

The spelling of 1313188823 in words is "one billion, three hundred thirteen million, one hundred eighty-eight thousand, eight hundred twenty-three".