313808387 has 2 divisors, whose sum is σ = 313808388. Its totient is φ = 313808386.

The previous prime is 313808357. The next prime is 313808399. The reversal of 313808387 is 783808313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 313808387 - 2⁶ = 313808323 is a prime.

It is not a weakly prime, because it can be changed into another prime (313808317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156904193 + 156904194.

It is an arithmetic number, because the mean of its divisors is an integer number (156904194).

Almost surely, 2^313808387 is an apocalyptic number.

313808387 is a deficient number, since it is larger than the sum of its proper divisors (1).

313808387 is an equidigital number, since it uses as much as digits as its factorization.

313808387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 313808387 is about 17714.6376480017. The cubic root of 313808387 is about 679.5501544655.

The spelling of 313808387 in words is "three hundred thirteen million, eight hundred eight thousand, three hundred eighty-seven".