1308887971 has 2 divisors, whose sum is σ = 1308887972. Its totient is φ = 1308887970.

The previous prime is 1308887939. The next prime is 1308888013. The reversal of 1308887971 is 1797888031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1308887971 - 2⁵ = 1308887939 is a prime.

It is not a weakly prime, because it can be changed into another prime (1308887471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654443985 + 654443986.

It is an arithmetic number, because the mean of its divisors is an integer number (654443986).

Almost surely, 2^1308887971 is an apocalyptic number.

1308887971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1308887971 is an equidigital number, since it uses as much as digits as its factorization.

1308887971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 52.

The square root of 1308887971 is about 36178.5567843716. The cubic root of 1308887971 is about 1093.8744844175.

The spelling of 1308887971 in words is "one billion, three hundred eight million, eight hundred eighty-seven thousand, nine hundred seventy-one".