351106181 has 2 divisors, whose sum is σ = 351106182. Its totient is φ = 351106180.

The previous prime is 351106177. The next prime is 351106183. The reversal of 351106181 is 181601153.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293573956 + 57532225 = 17134^2 + 7585^2 .

It is an emirp because it is prime and its reverse (181601153) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 351106181 - 2² = 351106177 is a prime.

It is a super-2 number, since 2×351106181² = 246551100672809522, which contains 22 as substring.

Together with 351106183, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 351106181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351106183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175553090 + 175553091.

It is an arithmetic number, because the mean of its divisors is an integer number (175553091).

Almost surely, 2^351106181 is an apocalyptic number.

It is an amenable number.

351106181 is a deficient number, since it is larger than the sum of its proper divisors (1).

351106181 is an equidigital number, since it uses as much as digits as its factorization.

351106181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 351106181 is about 18737.8275421672. The cubic root of 351106181 is about 705.4715293638.

The spelling of 351106181 in words is "three hundred fifty-one million, one hundred six thousand, one hundred eighty-one".