350840381 has 2 divisors, whose sum is σ = 350840382. Its totient is φ = 350840380.

The previous prime is 350840363. The next prime is 350840387. The reversal of 350840381 is 183048053.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286760356 + 64080025 = 16934^2 + 8005^2 .

It is a cyclic number.

It is not a de Polignac number, because 350840381 - 2¹⁴ = 350823997 is a prime.

It is a super-2 number, since 2×350840381² = 246177945880450322, which contains 22 as substring.

It is equal to p_18846122 and since 350840381 and 18846122 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (350840387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175420190 + 175420191.

It is an arithmetic number, because the mean of its divisors is an integer number (175420191).

Almost surely, 2^350840381 is an apocalyptic number.

It is an amenable number.

350840381 is a deficient number, since it is larger than the sum of its proper divisors (1).

350840381 is an equidigital number, since it uses as much as digits as its factorization.

350840381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 350840381 is about 18730.7335948168. The cubic root of 350840381 is about 705.2934619862.

The spelling of 350840381 in words is "three hundred fifty million, eight hundred forty thousand, three hundred eighty-one".