350981 has 2 divisors, whose sum is σ = 350982. Its totient is φ = 350980.

The previous prime is 350971. The next prime is 350983. The reversal of 350981 is 189053.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320356 + 30625 = 566^2 + 175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-350981 is a prime.

It is a super-2 number, since 2×350981² = 246375324722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 350983, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 350981.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 350981.

It is not a weakly prime, because it can be changed into another prime (350983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175490 + 175491.

It is an arithmetic number, because the mean of its divisors is an integer number (175491).

2³⁵⁰⁹⁸¹ is an apocalyptic number.

It is an amenable number.

350981 is a deficient number, since it is larger than the sum of its proper divisors (1).

350981 is an equidigital number, since it uses as much as digits as its factorization.

350981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 350981 is about 592.4364944870. The cubic root of 350981 is about 70.5387678064.

It can be divided in two parts, 350 and 981, that added together give a palindrome (1331).

The spelling of 350981 in words is "three hundred fifty thousand, nine hundred eighty-one".