314857861 has 2 divisors, whose sum is σ = 314857862. Its totient is φ = 314857860.

The previous prime is 314857859. The next prime is 314857877. The reversal of 314857861 is 168758413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253924225 + 60933636 = 15935^2 + 7806^2 .

It is a cyclic number.

It is not a de Polignac number, because 314857861 - 2¹ = 314857859 is a prime.

Together with 314857859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (314857831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157428930 + 157428931.

It is an arithmetic number, because the mean of its divisors is an integer number (157428931).

Almost surely, 2^314857861 is an apocalyptic number.

It is an amenable number.

314857861 is a deficient number, since it is larger than the sum of its proper divisors (1).

314857861 is an equidigital number, since it uses as much as digits as its factorization.

314857861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The square root of 314857861 is about 17744.2345847884. The cubic root of 314857861 is about 680.3068547326.

It can be divided in two parts, 3148 and 57861, that added together give a square (61009 = 247²).

The spelling of 314857861 in words is "three hundred fourteen million, eight hundred fifty-seven thousand, eight hundred sixty-one".