347121091 has 2 divisors, whose sum is σ = 347121092. Its totient is φ = 347121090.

The previous prime is 347121031. The next prime is 347121101. The reversal of 347121091 is 190121743.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 347121091 - 2¹¹ = 347119043 is a prime.

It is not a weakly prime, because it can be changed into another prime (347121031) 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, 173560545 + 173560546.

It is an arithmetic number, because the mean of its divisors is an integer number (173560546).

Almost surely, 2^347121091 is an apocalyptic number.

347121091 is a deficient number, since it is larger than the sum of its proper divisors (1).

347121091 is an equidigital number, since it uses as much as digits as its factorization.

347121091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 347121091 is about 18631.1859794271. The cubic root of 347121091 is about 702.7923098911.

The spelling of 347121091 in words is "three hundred forty-seven million, one hundred twenty-one thousand, ninety-one".