346220491 has 2 divisors, whose sum is σ = 346220492. Its totient is φ = 346220490.

The previous prime is 346220461. The next prime is 346220519. The reversal of 346220491 is 194022643.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 346220491 - 2⁷ = 346220363 is a prime.

It is not a weakly prime, because it can be changed into another prime (346220401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173110245 + 173110246.

It is an arithmetic number, because the mean of its divisors is an integer number (173110246).

Almost surely, 2^346220491 is an apocalyptic number.

346220491 is a deficient number, since it is larger than the sum of its proper divisors (1).

346220491 is an equidigital number, since it uses as much as digits as its factorization.

346220491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 346220491 is about 18607.0011286075. The cubic root of 346220491 is about 702.1839891055.

The spelling of 346220491 in words is "three hundred forty-six million, two hundred twenty thousand, four hundred ninety-one".