308746490221 has 12 divisors (see below), whose sum is σ = 334402400160. Its totient is φ = 284929179600.

The previous prime is 308746490209. The next prime is 308746490237. The reversal of 308746490221 is 122094647803.

It is a happy number.

It is not a de Polignac number, because 308746490221 - 2⁷ = 308746490093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308746496221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 505296 + ... + 934246.

It is an arithmetic number, because the mean of its divisors is an integer number (27866866680).

Almost surely, 2^308746490221 is an apocalyptic number.

It is an amenable number.

308746490221 is a deficient number, since it is larger than the sum of its proper divisors (25655909939).

308746490221 is a wasteful number, since it uses less digits than its factorization.

308746490221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433236 (or 433223 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 308746490221 in words is "three hundred eight billion, seven hundred forty-six million, four hundred ninety thousand, two hundred twenty-one".