306122473 has 4 divisors (see below), whose sum is σ = 306527620. Its totient is φ = 305717328.

The previous prime is 306122449. The next prime is 306122501. The reversal of 306122473 is 374221603.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 138368169 + 167754304 = 11763^2 + 12952^2 .

It is a cyclic number.

It is not a de Polignac number, because 306122473 - 2⁹ = 306121961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (306122273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201438 + ... + 202951.

It is an arithmetic number, because the mean of its divisors is an integer number (76631905).

Almost surely, 2^306122473 is an apocalyptic number.

It is an amenable number.

306122473 is a deficient number, since it is larger than the sum of its proper divisors (405147).

306122473 is an equidigital number, since it uses as much as digits as its factorization.

306122473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405146.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 306122473 is about 17496.3559920345. The cubic root of 306122473 is about 673.9563005301.

The spelling of 306122473 in words is "three hundred six million, one hundred twenty-two thousand, four hundred seventy-three".