1310423987 has 2 divisors, whose sum is σ = 1310423988. Its totient is φ = 1310423986.

The previous prime is 1310423953. The next prime is 1310424007. The reversal of 1310423987 is 7893240131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1310423987 - 2¹⁶ = 1310358451 is a prime.

It is a super-2 number, since 2×1310423987² = 3434422051409952338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1310423987.

It is not a weakly prime, because it can be changed into another prime (1310423927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655211993 + 655211994.

It is an arithmetic number, because the mean of its divisors is an integer number (655211994).

Almost surely, 2^1310423987 is an apocalyptic number.

1310423987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310423987 is an equidigital number, since it uses as much as digits as its factorization.

1310423987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1310423987 is about 36199.7788252912. The cubic root of 1310423987 is about 1094.3022143986.

The spelling of 1310423987 in words is "one billion, three hundred ten million, four hundred twenty-three thousand, nine hundred eighty-seven".