351996961 has 2 divisors, whose sum is σ = 351996962. Its totient is φ = 351996960.

The previous prime is 351996943. The next prime is 351996989. The reversal of 351996961 is 169699153.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 349877025 + 2119936 = 18705^2 + 1456^2 .

It is a cyclic number.

It is not a de Polignac number, because 351996961 - 2⁵ = 351996929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (358996961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175998480 + 175998481.

It is an arithmetic number, because the mean of its divisors is an integer number (175998481).

Almost surely, 2^351996961 is an apocalyptic number.

It is an amenable number.

351996961 is a deficient number, since it is larger than the sum of its proper divisors (1).

351996961 is an equidigital number, since it uses as much as digits as its factorization.

351996961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 393660, while the sum is 49.

The square root of 351996961 is about 18761.5820494968. The cubic root of 351996961 is about 706.0676351032.

The spelling of 351996961 in words is "three hundred fifty-one million, nine hundred ninety-six thousand, nine hundred sixty-one".