351308606861 has 2 divisors, whose sum is σ = 351308606862. Its totient is φ = 351308606860.

The previous prime is 351308606833. The next prime is 351308607019. The reversal of 351308606861 is 168606803153.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242045304361 + 109263302500 = 491981^2 + 330550^2 .

It is a cyclic number.

It is not a de Polignac number, because 351308606861 - 2⁶ = 351308606797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351308606461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175654303430 + 175654303431.

It is an arithmetic number, because the mean of its divisors is an integer number (175654303431).

Almost surely, 2^351308606861 is an apocalyptic number.

It is an amenable number.

351308606861 is a deficient number, since it is larger than the sum of its proper divisors (1).

351308606861 is an equidigital number, since it uses as much as digits as its factorization.

351308606861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 351308606861 in words is "three hundred fifty-one billion, three hundred eight million, six hundred six thousand, eight hundred sixty-one".