1323953887 has 2 divisors, whose sum is σ = 1323953888. Its totient is φ = 1323953886.

The previous prime is 1323953881. The next prime is 1323953941. The reversal of 1323953887 is 7883593231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1323953887 - 2³ = 1323953879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1323953887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323953881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661976943 + 661976944.

It is an arithmetic number, because the mean of its divisors is an integer number (661976944).

Almost surely, 2^1323953887 is an apocalyptic number.

1323953887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323953887 is an equidigital number, since it uses as much as digits as its factorization.

1323953887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 1323953887 is about 36386.1771418763. The cubic root of 1323953887 is about 1098.0554866712.

The spelling of 1323953887 in words is "one billion, three hundred twenty-three million, nine hundred fifty-three thousand, eight hundred eighty-seven".